I'm not familiar with the API system, but while using extensions such as DoctorN I notice there is no way of getting a notification when your race has finished, which I believe would be a nice addition.
Something similar to the notifications that are already available such as full energy bar, nerve bar etc. would be a brilliant addition in my view.
Another idea I had would be to put a counter in for how many racing points the car has earned within the upgrades section to help people make more informed upgrade choices.
I don't know if this can be done so I am just making the inquiry.
Thanks, Boxxy