Tesla to unveil electric big-rig truck in midst of Model 3 factory ‘hell’

Tesla Inc on Thursday will unveil a prototype electric big-rig truck, which may be able to drive itself, throwing the company into a new market even as it struggles to roll out an affordable sedan which is central to the company’s future. Chief Executive Elon Musk has described electric trucks as Tesla’s next effort to move the economy away from fossil fuels through projects including electric cars, solar roofs and power storage. The young market for electric cargo trucks is mostly focused on medium duty, rather than the heavy big rig market Tesla is after.