Is it that bad? this video shows that tesla cars use induction motors. I suppose the gap is very small <1mm. Is that the difference? I saw charts saying this is very efficient and also at all speeds rather than a certain speed. BLDC is the same thing except with magnets in the track(if it were linear). correct? except they use dc power. idk why they must be a bit more different then. What are you suggesting is most efficient and also real world cost effective (not building on train railroad tracks or anything, starting from scratch). I think those maglev trains in china are this bldc approach. I think they are very expensive.
So is the induction method cheaper to make but less efficient meaning electricity would cost more to run the cars/trains
wheras bldc is more expensive initially but more efficient so less costs to run the car/train
wait but then why wouldnt tesla cars use bldc. I feel like theres something I'm missing here