The Semi will share many components with the Model 3. The Semi will use four Model 3 electric motors and the two touchscreens on the driver’s console.
The Semi design is being improved with a new battery module that is lighter, better, and cheaper than the original design.
In the Q1 2018 Tesla earnings call, Musk said that there were about 2,000 total pre-orders of the Semi.
As of November 2017, companies already developing their own electric trucks include Volkswagen Group, Einride, Thor Trucks, Cummins, Daimler AG, Nikola Motor Company, Toyota, BYD, Kenworth, Proterra, Inc., and Uber.