2012 Green Fleet Conference

GE's Johanna Wellington, Sustainable Energy Program Leader GE's Global Research Center, gave a keynote about upcoming alternative-fuel vehicle technologies. Photo by Chris Wolski.

FedEx's Mitch Jackson
Vice President, Environmental Affairs & Sustainability, discussed the company's approach to sustainability and how it balances business needs with "green" efforts. Photo by Chris Wolski.

A number of this year's Sustanability All-Stars were able to attend the conference and accept their awards in person. Photo by Chris Wolski.

Industry group NGVAmerica co-located its event with the 2012 Green Fleet Conference. The organization had a large area at the conference where they could discuss natural gas vehicles and related technologies with fleet industry professionals. Photo by Greg Basich.

The Propane Energy Research Council (PERC) had a booth at the show where it could discuss the benefits of propane autogas as a fleet fuel with customers. Photo by Greg Basich.

One of the events in the exhibit hall was a live CNG vehicle conversion performed by Go Natural CNG Vehicle Conversion Kits.

Mercedes had its electric Smart fortwo on hand as well as a fuel-cell vehicle.

Venchurs had a CNG F-series pickup at the show. Photo by Greg Basich.

MotorWeek's creator and senior executive producer John Davis discussed available alternative-fuel vehicles in his keynote. Photo by Chris Wolski.

GM's Joyce Mattmann gave a brief presentation before MotorWeek's John Davis gave his keynote. Photo by Chris Wolski.

Bob Brown emceed the various presentations at the 2012 Green Fleet Conference. Photo by Chris Wolski.

Utility Washington Gas is the first fleet to receive the Clean Fleet Certification.

Attendees had opportunities to network in the exhibit hall during catered meals. Photo by Thi Dao.

Heavy Duty Trucking's Editor Deborah Lockridge moderated a panel on advances in engine oils. Photo by Lauren Fletcher.

ROUSH CleanTech brought one of its propane-autogas-fueled E-350 vans to the event. Photo by Greg Basich.

Leggett and Platt had one of its vehicles at the show and showed a number of upfitting options. Photo by Greg Basich.

BAF had a CNG version of a Transit Connect at the show. Photo by Greg Basich.

Audi brought its A3 e-Tron electric vehicle to the show. Photo by Greg Basich.

AutoGas America had a CNG-fueled Chevrolet Silverado at the show. Photo by Greg Basich.

BrandFX showed its upfitting options at the event. Photo by Greg Basich.

Attendees signed up for the popular Ride and Drive event before the exhibit hall opened. Photo by Chris Wolski.

Chrysler brought a CNG-fueled version of its Ram Cargo Van to the event. Photo by Greg Basich.

Ford brought its C-MAX Energi plug-in hybrid to the conference. Photo by Greg Basich.

Honda had its Civic Natural Gas sedan at the show. Photo by Greg Basich.

IMPCO brought an Isuzu NPR fueled by natural gas to the event. Photo by Greg Basich.