All those hybrids with efficiency read-outs make me think you should be getting rewarded with more than good fuel efficiency and funny displays if you drive well. What if there were an actual prize for driving a hybrid efficiently, or having fun in one.
The arcade coin start system makes starting a car amusing. Dinger's Ghost, HWEP Addict expands on that with an idea makes sense in the Miata with the coin start. But it could be applied to other types of cars:
The next mod is a ticket dispenser. The longer the drift, the more tickets come out. Save them up and trade them in for a prize!
If you drift a hybrid, your tickets should be worth twice as much.