Hi Pro's ultra-low NOx propane vehicles, developed by Roush CleanTech, reduce NOx emissions by 96% compared to diesel.
Roush CleanTech Shows Off Ford F-650 at StreetsLA’s Center for Green Innovation
Speakers at the event included Los Angeles City Councilman Paul Krekorian, U.S. Congressman Tony Cárdenas, and Los Angeles Mayor Eric Garcetti.