The difference being he can currently buy a large or max pack R1T. All GM/Chevy EV trucks have been delayed till at least 2025. Still haven’t delivered any to customers. And what makes you think they’ll have better efficiency? The frontal area will be much larger and weighing 9000lbs won’t help.
Quite a bit of difference in size. All OEM’s have to make parts available for at least 10 years so yes, parts will be available. No, a quad motor Bosch couldn’t be replaced an enduro.
The difference is that it’s actually different motors on a performance Y/3 vs the standard dual motor cars. DM R1’s and DM Perf R1’s are mechanically identical.