Sure, but the question was an entreaty of the void wondering how they're legal in the US when they seemingly violate US vehicle regulations regarding driver visibility. They weren't designed for the non-US market, so it's not exactly a shock they're not street legal in those markets.

(I actually did go and look up the answer after that comment, and the explanation is that they were able to demonstrate in the Model S that their blindspot cameras were both reliable and comprehensive enough that they could supplement the physical mirrors, which has honestly been a huge win and has lead to something of an explosion in modernizing NHTSA regulations. While they are fascists and the cars have aged like something that doesn't age very well, this spurring on of regulatory agencies did clear the way for broad rapid adoption of now-common features like ADAS, driver awareness monitoring systems and integrated blindspot cameras. There's talk that they're going to make reverse cameras mandatory on new cars soon, which will be nice as well. None of this is the result of the cybertruck, to be clear. That thing, and tesla, and especially musk, are all still awful. It's just an interesting peek at how the the vehicle regulatory landscape has changed shockingly quickly.)