In the case of Tesla you mean? One look at the Lotus Elise and you'll see they weren't exactly going for aerodynamics. Tesla barely survived the launch, so it w

In the case of Tesla you mean? One look at the Lotus Elise and you'll see they weren't exactly going for aerodynamics. Tesla barely survived the launch, so it wasn't going to happen back then. This is one of those "in hindsight" kind of things that never get fixed. The fact that Tesla is doing it says a LOT positive about them.