Having the car park inline with a charger is a much easier problem to solve than getting a charger to start from the ground and find it's way up to a car. They

Having the car park inline with a charger is a much easier problem to solve than getting a charger to start from the ground and find it's way up to a car. They could have the driver pull up into a generalized box/circle, and move the car forward automatically (polling with a laser (or OCR on the side of the charger) until it was in the perfect spot to be reachable. If cars can parallel park themselves, I think they can manage pulling up a given amount of feet. Also a little rotation on the car-facing end of the charger would help.