It's fun Diogo. Same reason I like the concept a lot better. I mean it's super fun when they ask you to drag, you take out that electrical beast and win.
They're all good in some measure. The Road Car is probably the weakest but at least it does a decent job overall. The Concept is pretty cool if a bit unorthodox, but the Race Car is the best of all. Every single part of the car is just so damn good looking.
...of course, they do all still have terrible onboard views as well.