I think you can do already Time Trials after you complete these races. If there had to be anything new, I'd prefer single player racing mode with bots which would fill up rest of places in race, but I guess that's too much for MTA.
Yeah, bots are too much..
Thats why I prefer a possibility to race alone without rewards.
Just for training and doing toptimes.
The bad thing about time trials is, as I said before, you can do it only once per hour. And you can time trial the same map only once per 24hours...
Race alone without reward and not toptimes for doing race alone (only with other racers) , +1