Chrysler Group delivered the first of 140 plug-in hybrid Ram pickups as part of a three-year demonstration project to test the technology. The automaker said the trucks will provide data on performance over 6.5 million miles of road testing, measuring fuel economy and emissions, thermal management, durability and the impact on a region’s electric grid. Test vehicles at a military base will evaluate the ability for the vehicles to provide power back to the electric grid in a reverse power flow.