Currently (to my knowledge) there is no feedback as to how well you drive, how close you are to having a crash and no way to actively prevent a crash. This is particularly daunting for those learning their limits or just testing out if they can drive at all. This can lead to an experienced driver not driving fast simply to be risk averse, because crashing is punishing in a lot of ways.
It would be cool if we could have a more transparent way of measuring whether our characters are struggling to control a vehicle or if they are driving like a racing pro. This would be very useful for those job architypes that involve driving vehicles. As well as measuring up potential chums to go ram-raiding with ;)