[sammyg2]

More batteries, more voltage, less windings and bigger diameter wire in motor, remove any sort of governor.

Many years ago at seizure world in So Cal, all the old folks were driving golf carts around the retirement village.
A few geezer gear heads started modding their carts. next thing you know, they are racing and hitting 60 mph. Yep, one of em crashes and got hurt pretty bad.
New rule, 10 mph max for golf carts.