Hub-motors are brushless DC motors; they work in a way that reduces friction and provides more power for your wheel during motion. Hub motors are either geared or gearless.
Here's a comprehensive guide to help you thoroughly clean your skateboard hub motor in six easy steps.
Whether one governor can drive two in-wheel motors, you need to comprehensively consider the compatibility of the controller, wiring configuration, power and other factors.
In a nutshell, hub motors are simpler and more accessible in terms of functionality. On the other hand, these types of motors are heavier than chain drive motors, which increases the weight of the vehicle significantly.