Re: Tesla semi?
"Finally, it'll still have normal brakes. They just won't, normally, be used much."
I guess you don't drive a truck. The friction brakes will still get used. Every time you leave a proper gap between the truck and the car in front, somebody moves into the space and hits their brakes causing you to hit the brakes too. I pity the armatures in the motors and still think that it won't be enough.