Burning out the controller on my bike has become a daily routine, so I added a voltmeter, a 24V high-speed fan, and a thermometer.
The modified e-bike can manage to run for about 3 hours on flat ground at a speed of 25 km/h, which equals about 75 kilometers.
The bicycle itself has good off-road capabilities. Modifying it with electric power makes it even better, whereas a combustion engine could easily strain the chain.