An Enhanced Autopilot system would handle lane-keeping duties and apply the brakes if needed. From this perch, a driver can pilot the truck for 300 or 500 miles, depending on variant, then dump
400 miles into the massive under-cab battery pack via a 30-minute charge courtesy of the currently hypothetical Megacharger network.
According to the American Transportation Research Institute, 62 percent of U.S. pickups and deliveries fall within the longer-ranged model’s range.Wowing the assembled journos and Teslarati, company CEO Elon Musk touted the truck’s scorching acceleration times — hardly top of mind for fleet operators, but this is Tesla, after all. The company claims a
0-60 mph time of five seconds for an unburdened rig, or 20 seconds hauling a trailer bursting at the seams. On a 5-percent grade, Tesla says the Semi can maintain 65 mph.
Speed is nice, but cost is key for any operator. And unpacking the Semi’s economics proved difficult. The operational cost figure tossed out by Tesla is
$1.26 per mile, with rival diesel models pegged at $1.51. Chalk up the difference to reduced fuel costs
(Tesla claims a $200,000 fuel savings over the life of the vehicle, which is guaranteed for 1 million miles), plus reduced maintenance. As the model employs regenerative braking, Musk touted the Semi’s brake pads as having a “quasi-infinite lifespan.”
http://www.thetruthaboutcars.com/2017/11/head-class-8-semi-tesla-promises-green-trucking-alternative/View of battery and electric motors.
