In fact make the drivers push the cars, that would get rid off ALL driver aids! 
I remember Minardi having to test on F3000 tyres because they didn't have a contract with either Bridgestone or Michelin at the time. They where about 5 seconds a lap slower than usual!
I remember Minardi having to test on F3000 tyres because they didn't have a contract with either Bridgestone or Michelin at the time. They where about 5 seconds a lap slower than usual!