Useless response from me but when I saw the headline I thought that Tesla were making electric bikes!
On the bike carrying side of things, on my last car I had a tow bar fitted (that could be removed quite easily) and a bike carrier that was solid enough for me to stand on. Reasonably aerodynamic (although I don’t know how you’d measure that outside of a lab) and I certainly never had to worry about height restriction barriers. Not as easy as chucking in the back though, but if you’re camping or taking more than one bike it’s great.