There are certainly reasonable alternatives to things like wing mirrors. For example, it's not hard to imagine a camera-and-screen arrangement in a vehicle from Tesla.

However, giving the vehicle a solid shell pretty much implies that the full force of any impact is transmitted to the occupants on one side and the impactee on the other because physics, which is going to be a concern given the great emphasis on the materials used.

Then there's the angular styling, which appears to have edges practically designed to cause serious injury to anyone vulnerable that might be hit by the vehicle, not to mention the potential to act as a ramp sending the victim of a frontal collision up the front or even over the top of the vehicle.

It definitely looks like a case of form-over-function so far, but it's hard to believe no-one at Tesla has considered these kinds of issues, so surely they must have something up their sleeves to deal with them (unless <conspiracy theory>it's all been a very successful publicity stunt and they never really intended to bring a vehicle like this to market</conspiracy-theory>).