Formula e racing in it's current form is limited by it's battery tech. IMHO it makes a poor showcase for the performance potential of electric cars using the pretty lame device of having the driver switch to a different fully charged car when the power runs low. If they redesigned the formula e racers around Tesla battery tech they'd be able to drop this approach and conduct the race in the same format fans are accustomed to. Pit crews would race to swap battery packs, that as with Model S would be thin and flat and pop in on the bottom of the car lowering it's center of gravity. Considering the speed of the automated battery swap Tesla demo'd, a well practiced pit crew with evolved tools ought to be able to do it in single digit seconds. Open source patents ought to make this a more attractive option to the FIA and associated teams and sponsors. This seems like a clear good faith use that doesn't compete with Tesla and advances it's tech as a standard.