[Graham]

@Graham .. how are the car class points scored, is it on fastest laps ?

The car class points are scored exactly the same way as for the Events......
1st 20pts, 2nd 15ts, 3rd 11pts, 4th 8pts, 5th 6pts, 6th 5pts, 7th 4pts, 8th 3pts, 9th 2pts, 10th (and thereafter 1pt) 
Then teams points are a result of the total Event points + Class Points.

The fastest laps are there mostly for interest or if there is a tie at any Round for position, but could also be the deciding factor when it comes to the end of the series should there be a tie for 1st, 2nd or 3rd in the Events etc.