> There are plenty other businesses employ lots of people but don't have so much protection from state laws. > > That may partly be due to the fact that car dealers have a lot political power. Dealers contribute a big share of state sales tax revenues — as much as 20 percent in some states — and they tend to be big local employers. That makes state and local legislators listen.

Interesting. So they basically are afraid of any dent in the system even if it wouldn't erode their own sells (of every brand but Tesla).