Our Team

Mike Roeth is NACFE’s Executive Director. He sets the direction for the organization and determines which projects NACFE should undertake and where to focus its efforts on improving freight efficiency. He also serves as the trucking lead for RMI. Mike has worked in the commercial vehicle industry for more than 35 years and his specialty is brokering green truck collaborative technologies into the real world at scale. Mike was named an Industry Influencer by Fleet Owner and awarded the prestigious SAE 2020 L. Ray Buckendale Lecturer and manuscript author in 2020. He understands the customers, operations and intricacies of the commercial vehicle industry having held various positions with Navistar and Behr/Cummins.

Rick Mihelic is NACFE’s Director of Emerging Technologies. In this position he spearheads NACFE’s work on electric, hydrogen fuel cell and other alternative fuel medium- and heavy-duty trucks. He also contributes to NACFE’s Confidence Reports and writes blogs that are regularly published in CCJ. He is also president of Mihelic Vehicle Consulting LLC and has 40 years’ experience in the trucking and aerospace industries including 20 years in commercial vehicle development for PACCAR and Peterbilt. He received the 2016 SAE L. Ray Buckendale Award and 2020 SAE Crawford award. He also is an associate editor for the SAE Journal of Commercial Vehicles and active member of multiple SAE and TMC groups.

Yunsu Park is NACFE’s Director of Engineering. His responsibilities include analyzing data for NACFE’s Annual Fleet Fuel Study and Run on Less events. He has authored several Confidence Reports for NACFE and is an independent consultant to the trucking industry. Yunsu’s area of interest is in data collection and analysis, and technology implementation, particularly as it relates to human behavior. Prior to NACFE, Yunsu was CTO for a technology start-up working with fleets on driver behavior and incentives and held various roles in finance and engineering at Navistar.

Denise Rondini is NACFE’s Director of Communications. Her responsibilities include handling NACFE’s internal and external communications efforts as well as media relations. She also is on the teams that develop Confidence Reports and Guidance Reports. Denise has 40 years’ experience in the trucking industry as editor of several industry publications. She is also president of Rondini Communications, a full-service communications firm specializing in the trucking industry. She is the recipient of SAE International’s 2019 Environmental Excellence in Transportation Award.

Dave Schaller is NACFE’s Director of Industry Engagement. His responsibilities include interfacing with fleets, OEMs and suppliers, writing reports, conducting workshops, giving presentations, and running the social media groups. Dave works closely with the drivers, fleets and sponsors for the Run on Less demonstrations. As a Navistar employee for 27 years, he held positions in production design, research, program management, dealer sales training, marketing, product line management, and strategic product planning. A marketing role allowed him to spend many days in truck stops, fleet offices and dealerships in five countries learning about what the industry desired and why.

Kim Ehrenhaft is the Design Director. In this role, she works on NACFE’s Confidence Reports and Guidance Reports and is responsible for its social media efforts and website. Kim has been involved in the trucking industry since 1993 and has served as managing editor/production manager at Successful Dealer and Truck Parts & Service, and production manager at Heavy Duty Trucking and Heavy Duty Aftermarket Journal.