For this you need a car that handles somewhat well and also has decent top speed for the long straight.
I liked doing this with the F40
Fully stock with SH tires it was just under 600pp
The V8 Turbo isn't thirsty and you can do 8 or 9 laps with a bit of short shifting. Then a quick stop to refuel, no tire change.
Might not be the fastest but I really liked driving it around here
View attachment 1383226
I just wanted to have another go at it and due to the recent update it gained a few PP and has now over 600. Great

Also just noticed that the change doesn't show in the garage until you select the car. When you select a car the PPs are updated
Well, have to find another car to use around here now...