The idea is we all start in the same car, with the engine limiter reducing the PP down to a set level. After each race, we adjust the allowed PP for each driver. Drivers that finish well have their allowance lowered. Drivers that finish poorly, having their allowance raised. It is meant to be a handicap system. It is like boost, in that slower drivers get a bonus and fast drivers get a handicap. But unlike boost, it is static for the race, and only helps you if you actually keep the car on the track. If you have an off, then you don't get the magical increase that boost would give for you to catch up.
If there is any interest to try it out, then we can use the S2000. Usually we run three courses, running each one twice. I'd like to keep us in the same car, and we could run Deep Forest Reverse six times, but maybe it would be more fun to run the three courses we have.