Our Team

Bonnie Trowbridge

Executive Director

Bonnie brings a deep knowledge of the market – from consumer EVs to alternative fuels to heavy-duty manufacturers and fleets, and a comprehensive understanding of the vehicle incentives arena across the U.S. – to her role as Executive Director for the Drive Clean Colorado (formerly Denver Metro Clean Cities Coalition). With over 25 years of experience in business development for nonprofits and corporations, Bonnie is focused on achieving breathable air for everyone by advancing the clean transportation industry. Her past experience includes nonprofit development and fundraising, grant writing and management, and events management, and she spent 11 years in public relations and marketing for Lightning eMotors, manufacturer of electric powertrains for medium- and heavy-duty buses and trucks, where she was instrumental in growing that company from a start-up to a thriving manufacturer. Her experience includes program management for CALSTART, a non-profit organization working to commercialize clean and efficient transportation solutions, where she led events such as a California policy summit, industry leader workshops, and utility engagement programs; and work as a development director for nonprofits in Denver and Washington, D.C.  

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Julia Davila

Associate Project Manager 

Julia is an Associate Project Manager at Drive Clean Colorado and started as a Clean Cities intern in September 2020. She is a recent Environmental Studies graduate from St. Olaf College in Northfield, Minnesota but grew up in the Bay Area, California. During her college years, Julia served as the Sustainability Coordinator for non-profit Ole Thrift Shop, interned with the City of Palo Alto Utilities, and volunteered for the Sierra Club. As a former Clean Cities intern, Julia is excited about her new role and the opportunities it offers to work with consumers across the state. She loves being outdoors, is a houseplant fanatic, and a huge foodie. 

Specialties & Projects 

  • Drive Electric Colorado Program 
  • Event support 
  • Consumer EV education & communication 

Contact Julia

Selena Martinez

Associate Project Manager 

Selena is an Associate Project Manager at Drive Clean Colorado and she started in September 2020 as a Clean Cities intern. She recently graduated from the University of Colorado Boulder with a Bachelor’s in Chemical Engineering and a Minor in Physics and will be attending Oregon State University in the Fall of 2021 to pursue a PhD in Chemical Engineering. During college, Selena was involved in volunteer outreach and mentoring programs aimed at encouraging interest in STEM fields and providing support to engineering students. Through her role at Drive Clean Colorado, Selena has greatly expanded her knowledge of alternative fuel transportation and is passionate about contributing to clean air in the state and helping educate others about clean transportation technology.  

Specialties & Projects 

  • Alternative fuels fleet working groups 
  • Stakeholder communication and support 
  • Event support 

Contact Selena

Sonja Meintsma

Project Manager 

Sonja is a Project Manager at Drive Clean Colorado. She holds a Master of Public Affairs with a focus in sustainability and policy analysis from Indiana University’s O’Neill School of Public and Environmental Affairs (SPEA), as well as a Bachelor’s degree in Anthropology & African Studies from Macalester College in St. Paul, Minnesota—her home state. Sonja brings extensive community development experience to the team having worked as a grant coordinator for Girls Inc. of Monroe County (IN) and as a Peace Corps Volunteer in Zambia, where she focused on food security, income generation, and conservation agriculture. She has developed her knowledge and expertise on clean transportation and clean fuels through her work across the industry, having partnered with leading manufacturers, non-profits, and local governments to advance transportation electrification. She is dedicated to living sustainably and is motivated every day to fight for clean air and blue skies across Colorado. 

Specialties & Projects: 

  • Ride & Drive events and demo planning 
  • Grant writing, infrastructure development support 
  • ReCharge Colorado coaching 

Contact Sonja

Kristi Mladenovic

Business Manager 

Kristi is the Business Manager at Drive Clean Colorado and came on to the team in January 2019. Kristi provides leadership in all areas of accounting and is responsible for administrative systems and data. She has over 20 years of experience in various senior accounting and financial analysis roles, directing the full spectrum of accounting and financial services from a $6B international firm to a diverse group of nonprofit organizations. She currently serves as a board president and treasurer for two local nonprofits. She is a 2nd Degree and Certified Instructor at a world-renowned Tang Soo Do martial arts academy. She received her bachelor’s degree from The George Washington University.  

Specialties & Projects:  

  • Events, contracts, reporting & invoicing  
  • Grant writing, team organization & budget preparation; onboarding of grants awarded  
  • Accounting software, payroll & CRM   

Contact Kristi

Gabriella Perkins

Project Manager 

Gabriella is a Project Manager at Drive Clean Colorado and came on to the team in March 2020. Gabriella leads and provides support on all events and is the ReCharge Colorado Coach for the Denver Metro Region. She has been working in the clean transportation industry for almost 5 years now. Within the industry, she has experience in roles including marketing, PR, events, and grant writing & analysis. She received her bachelor’s degree from Colorado State University.  

Specialties & Projects:   

  • Lead event support (for fleets, consumers, and businesses)  
  • Infrastructure development support  
  • Charge Ahead Colorado Grant coaching  
  • General consumer EV coaching 

Contact Gabriella

Steve Trowbridge

Project Manager, Fleets and Fuels

Steve Trowbridge is the Fleets and Fuels Project Manager for Drive Clean Colorado. With experience in almost every facet of the transportation industry, Steve has a unique insight into the clean fuels and advanced technology aspect. He spent 15 years with the Colorado Department of Transportation (CDOT), starting as a snowplow driver and finishing as an eminent domain appraiser, even testifying as an expert witness on several occasions. Steve holds a Class A Driver’s License with endorsements for Hazmat, Doubles/Triples and Tankers with experience operating, maintaining and repairing medium and heavy-duty commercial vehicles. As an integral part of a team representing the testing and development of hybrid trucks and buses, Steve consulted and coordinated with both engineers and mechanics to create maintenance plans, fleet analysis and training for advanced energy fleets. As Steve’s transportation career evolved, he became more aware of the industry impact on the air quality in Colorado and he developed a passion for finding solutions for cleaner air. Steve graduated Cum Laude from Regis University with a Bachelor of Science in Business Administration.

Contact Steve

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