I Suggest That Damage Affects The Car,And The Parts. When The Car Is Extremely Crashed,The Damage Affects The Engine,Handling,Aerodynamics. I Hope These Things Will Make Others Avoid Crashing,As They Car Get Slower,And Slower. The Damaged Engine Makes The Car Accelarate Slower,And Reduces Top Speed. Handling Affects The Cars Control. Damaged Engine,Makes The Car Slower. The More The Cars Front Is Damaged,The Slower The Car Gets. Depending On The Damage. I Hope They Add This For More Realism And To Make Pits More Useful. And Make Others Avoid Car Accidents.