Michigan-based electric powertrain company ALTe LLC (earlier post) revealed its demonstrator Ford F-150 range-extended electric vehicle conversion at the 2010 National Truck Equipment Association (NTEA) Work Truck Show and Green Truck Summit. ALTe is developing light- and medium-duty series plug-in hybrid electric vehicle powertrain systems—initially as conversions, but ultimately extending to an OEM basis. Production-intent specs for the powertrain in the F-150 REEP …