Im very new to this so sorry if there is a solution for this already.
I feel that the cars go very fast on my track even on the lowest speed setting, so when a car has no more fuel, the speed goes down to 10% as a "penalty" for not fuling up, have i understood that correctly?. The problem for us is that the cars go too fast even on the lower speed settings. So you could go with a race strategy to not prioritize fuling.
First i thougth if it was a way to simulate the throttle not coming all the way down so the speed would be 3% ish when no fuel, since i dont really notice the speed change.
But then i was thinking if there was a possibility to stop counting laps for a car with no fuel? It is probaly easier and it is very logic, with no fuel, you cant drive, therefore no laps.