Therefore, there is a present need for a unit to provide {HEAD ~ adequate electrical power output} at {TAIL ~ low, as well as high, vehicle speeds} 
at
Therefore , there is a present need for a unit to provide { HEAD ~ adequate electrical power output } at { TAIL ~ low , as well as high , vehicle speeds }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL