@sundogplanets The 33 cars in the Indianapolis 500 comprise only 0.5% of the 68,000 m^2 track area they orbit. Therefore they never interfere with each other?
1 Speedway is just over 4km long and about 17m wide for or 68K m^2.
2 Typically 33 cars
3 The cars are nearly 5m x 2m.