system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why Tesla is banned from selling cars in 48 of 50 states.

edit: I'm not sure which 2 states allow the sales, I saw an article in the Washington Post today about how Tesla has a showroom in the DC Area but can't actually sell the cars.
gpt
Tesla is caught up in old laws that were put in place to protect the local dealer from direct competition with Ford, GM, etc. It was feared that the big auto companies could/would come in and put local dealers out of business if allowed to compete directly. 

Tesla does not have existing dealers to put out of business, but the laws still apply to them. If they succeed in working around the laws, then this will give  precedent to Ford, GM etc to also work around the laws. 

Dealers are fighting Tesla because they are afraid of the big brands dealing directly and cutting them out.