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Battery drain is certainly a weak link for now, but top end speed isn't, you
can make an EV go as fast as you want; torque decides acceleration, and
Kw decides top speed, and you can give an EV as many Kw as you want. If
the desired top speed would exceed the motor's design max rpm, just put
the appropriate gear between the motor and the wheel[s] it drives, as some EVs already do, but for a different reason.
raymo
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