Once again, not to rain on everyone's parade, but some of the changes are currently limited by the FMVSS (Federal Motor Vehicle Safety Standards). For instance, a lot of people have asked why the outside rearview glass mirrors couldn't be replaced with rearview cameras. There's no technical reason they couldn't be, but there's currently a regulatory reason. Same reason Infiniti had to have a mechanical backup system to its "steer-by-wire" system. In time, once the reliability of new technologies can be proven and demonstrated, the standards may change, but for the time being, there are some limitations as to how "radical" EM and Tesla can get.