We tow our 2005 Pruis on our KarKaddy dolly.
The MYTH about the rear axle on a Prius having anything to do with the Hybrid System has nothing to do with the truth!!
It all happens at the front of the car.
If you put a Prius on a car dolly with the front wheels off the ground the way it is supposed to be done the rear wheels will not magically charge the battery.
One thing you do not want to do after loading a Prius on a car dolly is to set the parking brake. Do Not Do It, or on any front wheel drive car.
You will be sliding the rear wheels when you take off!!!
Even rear wheel cars use the back wheel assembly to set the parking brake.
Get a good dolly with a good braking system and enjoy!!!