Electric motors are not the problem. Battery charging and range is. Then where do the electrons come from to charge the batteries? Solar and wind have their own emissions and hazardous materials. Recycling is a problem yet to be worked out.
EV's have their place in temperate climates until the problems are worked out.
H2 has its problems on sourcing. Storage seems to be getting worked out. This also needs more work.
For the short term at least, natural gas in converted diesels as I stated is a good stepping stone, especially combined with hybrid.