[ZesePreodaNed]

The problem is not only aerodynamics that stop cars from following each other. The brakes are so good these days that braking zones are so short and it is near impossible to outbrake another car. Braking even one meter after a car you are trying to overtake could mean the difference between making the corner, taking out the other car or landing up in the kitty litter/barrier. There are a number of issues that need to be resolved. Sorting out the aero issue would be a great start though.