Fuel dosen't matter to lap times that much anyway! Take extra!
At the oval I was running full 80% fuel from the start and my lap times were comparible to the top ten.
It's mainly the pace car periods that drags the race out. The only way we can keep the race length is if we had no pace car period. If we combine the two then the race overall might reach 3 hours
No it's not. If you practise you know your laptimes, compare that to the world record laptimes and you will see the difference in 1 hour won't be that many laps (it's probably the same even when your way slower) so you know how much fuel to carry.
The problem with not being timed races is. We run into the problem of last Sunday 3+ hours racing... I don't know about anyone else but it was lucky that I didn't have to leave half way through.
I have a wife and two kids 3+ hours racing all at once dosen't happen very often. The only reason I pulled it off last week was they were gone for the whole day. Even a 1 1/2hr race would be better. As long as we know when it will end we can schedule for it.