I think for electric, batteries are still the best option short term. Long term, there are going to be issues with disposal once they've reached the end of useful life. If everyone were driving EVs, that would become a real problem. Idk if nuclear would present the same issues at some point, but I'm sure those same issues will be there.
I suspect nuclear in vehicles will be a tough challenge, not the least of which would be cost.
yes, the issue with electric batteries is how we can dispose of them. it's been a problem since my Hs days. Put them on a craft and have them crash into the sun is the easiest answer. How we can pull this off goes way over my noggin.