For how long until it smokes?
It suppose you don't need 100HP continuously, just when accelerating.
A 100HP electric car will have a pretty impressive 0 to 60mph time.
actually pretty much constantly...
as you up the frequency to get higher speeds the current goes down, so you up the voltage. what you can not do is to run at high voltage and low frequency... remember this is an AC motor: no brushes and the speed is determined by frequency.
since HP is proportional to both speed and torque, you can get a very small motor that will deliver huge amounts of HP in a small size, the same way you can get a very small transformer in a small size at high frequency.
in other words, if you get a 60Hz 30VAC 10HP motor and run it at 600Hz 300VAC you get 10x speed and 10x HP at about the same current and slightly higher losses (20%?)
while the above example is not practical, it is practical to get 100HP peak using a factor of 6 say, in a vehicle since cruising levels would be more like 30HP... I am going from memory right now, but if you think about it the ONLY time you notice the lack of HP (except for idiot cars like Neons that wont even climb a hill) is when you are actually asking it to perform. (sudden speed change from 60-80MPH to pass in traffic)
frankly I do better with a 100HP stick than an older 200HP automatic turbo since I can tell the tranny what to do but the older turbo hesitates.
another point about the AC traction motor (this whole discussion revolves around "traction motors" that are designs based on torque at the wheels) is that there is no transmission ... the ideal case would be a 200RPM at 50VAC 60Hz wheel motor ... at 800RPM on a 2 ft diameter tire you would need 200VAC at 240Hz to go 60MPH.