Board Thread:Game Discussion/@comment-94.228.80.91-20180506142638/@comment-28169398-20180506161552

Basically because then you have to alter the handling and braking characteristics of cars as well to do it right.

Cars that rely on aerodynamics can and do slipstream, but as we saw at Turn 1 of Baku this year with Danny Ric and Max, it takes away all of the down force on the front wing and your braking distance is shot. Bye bye gear box of the front car and bye bye front wing and nose of the car in the tow.

You also have the issue of dirty air. All of those little vortexes that mess up the aero of a car that is trailing, usually making it extremely difficult to pass.

This video by Chain Bear F1 does a great job of explaining it.

Also, the AI is currently terrible at slipstreaming. In practice two cars that find themselves out of the lead pack in a NASCAR race that are close on track on a Super Speedway will team up and draft to try and catch the leaders. Here, if you try to tuck behind a bot and get close enough gain a speed advantage, the bot moves off the line, killing the draft. If you pass and try to get them behind you, they stay there for a short period of time and you lose the draft. About the only thing that drafting in RR3 is slingshot maneuvers.

Until FM can get the bots to drive cooperatively, which NASCAR Games had right in the 90's, it is really a pretty useless feature.