You're probably wondering how you'd park this thing, but EP Tender has already thought of that and engineered their way out of the problem. The EV pulls into a parking space with the EP Tender and inches to spare. Then, to leave the space, the EP Tender deploys its secondary set of smaller wheels and lifts the larger rear wheels off the ground. They can then track with the car as it backs up. When the driver is ready to drive forward, the EP Tender puts its regular wheels down and lifts that secondary set up, and it's ready to go. This wheel design is actually the subject of the EP Tender's patent.