Why not? We just need to use Mr Fusion in everything

https://backtothefuture.fandom.com/wiki/Mr._Fusion

In a world where nuclear power helped with climate change, would also be a world where Teslas would eliminate a good chunk of harmful pollution by allowing cars to be moved by nuclear, so not sure what point you were trying to make.

Even at this minute, Teslas are moving around powered by nuclear power.