As is implied by the name, the motorized kayaks run on a motor that is lightweight and has been designed for kayaks and canoes. The motors do not use gas or oil and are powered by an environmentally friendly battery. Thus, there is no need to get anxious about noise pollution or fumes while kayaking.The kayaks can move at about 2-4 mph, and one can paddle he kayak as and when they want. Keep in mind that while you do not need to register unmotorized paddle craft, some states requires registration as soon as you put a motor on.