The powertrain is pretty free nowadays in Formula E, but the rest of the car is almost entirely spec, which inevitably means there's a lot of similarity. It als

The powertrain is pretty free nowadays in Formula E, but the rest of the car is almost entirely spec, which inevitably means there's a lot of similarity. It also means they can spec something where the aero doesn't produce so much dirty air. I think keeping the development limited to the powertrain is the right move for Formula E; there's plenty of other series where money is thrown at the rest of the car, so let developments happen where the series stands out.