Quoted from Platypus:You might want head lights.
I spoke with an engineer who has worked in the automotive industry earlier today. There are no legal requirements for headlights, just legal requirements about the light that the front of a vehicle illuminates. He thinks that it would be difficult but it's doable.
He did note the brake lights may need a bit of modification, but not a crazy amount. There are rules about how much needs to be visible and how much light they put out.
Basically, he said that headlamps basically have always been what they are because of tradition, but there is nothing stopping them from changing legally.
The side mirrors are currently not legal in the US but are legal overseas.
Tesla doesn't usually reveal vehicles that look too drastically different. I think it's all legit. Kind of crazy, but legit.