>>1720352Sounds like you don't live in Switzerland or Guam.
>>1720046Yes, suspension adds complexity (another point of failure) and weight, but you will want it every time the road is slightly bumpy. And - of course - when off-roading.
Hollow motors are still in their infancy.
>>1720196The sweet spot is around 15-20 mph.
Go faster than 25 mph and enjoy drag, air resistance, crosswind, and hope to not to hit a small bump.