www.greencarcongress.com/2012/06/wrightspeed-20120622.html CA Energy Commission awarding Wrightspeed $5.789M grant for retrofit range-extended electric powertrain for medium-duty commercial vehicles Wrightspeed Route regular maintenance consists only of air filter and fuel filter changes. The Wrightspeed Route generator has only one moving part, no lubrication system (air bearings) and no cooling system. The Route motors have only one moving part.