One thing that’s fun about them is since they are artificially limited to run a little conservatively for heat generation, there is a bit of thermal headroom available. The league decided to make use of that by assigning various videogame style “boost” mechanics. The flavour of which are still constantly being iterated on. At one point it was earned by taking an alternate “long cut” for a part of the track, and then they could choose when they used the power boost after that point. Currently they are doing it by choosing to do a sort of pit rapid charge thing, every driver has to do it once per race, they choose when, and once they have taken that pit stop, they can then activate the boost any time afterwards.

There was also a controversial version that probably never should have made it past discussions. They had the audience vote on favourite dirvers, and doled out the boosts to the winners of the popularity contest… I don’t know, maybe they wanted to encourage a positive attitude on and off the track or something.