so how are they going to transfer power to the wheels, directly on a drive shaft, or maybe two seperate electric motors on the back two wheels for traction control? any idea how many batteries they are using?

i know that the tesla uses a motor intigrated into the rear axel but i don't know mechanics behind it. in larger applications (mine haulers for example) there is a motor at each wheel. this application is ideal because it makes things like regenerative breaking a little more easy.