These things weigh a few tons. If you want their appearance to match their capabilities, we'd have to slap wings and a tailplane on them.
It would work well with the turbine engines on the back, sure, but then we're gonna have to take a look at other things as well.
EMP permanently disables your own car and doesn't display any visual feedback.
The blue barrier keeping you inside the racing tracks has to be removed.
The system that keeps angular velocity on collision in check has to be removed, 'cause real cars tumble like crazy when they hit something.
80% of development resources go towards terrain deformation, 'cause stuff warps when you hit it with say... 648 megajoules (jebus... and that's with the cars weighing a understated 90.000 kg).
I get it, immersion requires illusion and maybe the current car models just don't cut it for you, but when in doubt (excuse me for linking to this trash):http://knowyourmeme.com/memes/fucking-m ... -they-workhttp://knowyourmeme.com/memes/ancient-aliens