This isn't just BMW i3 specific, but they are using one as the test subject here. By they, I mean researches at Graz University of Technology, a project backed by BMW AG and a few others.
For the first time, we have succeeded in a robot-based charging station autonomously charging several vehicles one behind the other, without the vehicles being specially adapted for it have to. Thanks to ingenious camera technology, the robot recognizes the charging socket of the vehicles and is thus able to autonomously set different parameters– Cars, which successively drive into the charging station, charge. The problem of positioning the vehicle at the loading bay could thus be solved, so that the system works even when parking misalignments occur