If I were to store solar in my electric car as a form of temporary storage, I get probably between 80 and 90% of what was generated by my cells delivered back t

If I were to store solar in my electric car as a form of temporary storage, I get probably between 80 and 90% of what was generated by my cells delivered back to my house. All I need to do this are some slight alterations to my electrical system. If I wanted to do this with my hydrogen car, I would need to get some expensive electrolysis station next to my house and I would get maybe 50% of stored energy back after electrolysis. I would also need to get the compressor etc maintained regularly. Also, if you mean storage for actual driving, as in possible range, there's hardly a need for more range than a Tesla can already deliver... For most people. The biggest change to make it more feasible for pretty much all people is charging speed and that keeps improving too.