Take the Model S, double it and then double it again. End result is basically the Tesla semi.
The Tesla Model S P100D
That's how Tesla chief technical officer JB Straubel described the Tesla semi during his keynote speech at the Midwest Renewable Energy Association’s Annual Energy Fair last weekend in Wisconsin.
Here's Straubel's quote
“It may not be intuitive to everyone, but the same technology that’s in the Model S can be scaled up. In fact you can just kind of double it and double it again, you can scale it to vehicles that are much much bigger.”
We already knew that the Tesla semi would make use of existing Tesla parts. In fact, Tesla CEO Elon Musk made this known not too long ago:
“No, we will manufacture that ourselves. Most of that semi is actually made out of Model 3 parts by the way. It’s actually using a bunch of Model 3 motors, without revealing too much about the future of it, so we are able to use a very high volume vehicle, and then combine several motors to have (pause) I think it’s actually going to have a very good gross margin like…not something that the other…it’s like you can’t do that with a traditional truck. So effectively (the Semi-Truck) was just a very compelling product that has low unit cost.”
It now sounds like the Tesla semi will repurpose more and more existing Tesla parts.
Take some S, add a bit of X and some 3 and the result is the Tesla semi, which will be fully revealed in September 2017.