Unfortunately, I think you're imagining a fantasy vehicle: your requirements are pretty much in direct conflict with each other.
The smaller the vehicle, the less it can rely on passive safety (crashing better), and the more it has to rely on its advantages at active safety (avoiding crashing). You can't cheat physics: a tiny personal vehicle is never going to have passive safety as good as a midsize car. Even relatively safe compact cars like the Toyota Yaris don't have 5-star crash ratings, so I don't see how a 2-wheeler ever will.
Motorcycles are dangerous primarily because (a) small fast vehicles tend to attract more than their share of irresponsible people (which, not uncommonly, includes alcohol), and (b) car drivers have trouble seeing tiny vehicles. I don't see how this vehicle proposes to change either of these factors.
The smaller the vehicle, the less it can rely on passive safety (crashing better), and the more it has to rely on its advantages at active safety (avoiding crashing). You can't cheat physics: a tiny personal vehicle is never going to have passive safety as good as a midsize car. Even relatively safe compact cars like the Toyota Yaris don't have 5-star crash ratings, so I don't see how a 2-wheeler ever will.
Motorcycles are dangerous primarily because (a) small fast vehicles tend to attract more than their share of irresponsible people (which, not uncommonly, includes alcohol), and (b) car drivers have trouble seeing tiny vehicles. I don't see how this vehicle proposes to change either of these factors.