Mike, we didnt have any of those problems this year, we got in and out happily enough.

Besides if all else fails just wait till the end of the day when:

Lots of people have crashed or broken down and so are not around
Lots of people are going home for tea and so are not around
the track has plenty of heat in it

Me and john did 6 laps in less than an hour and a half last year one evening starting from about 5:30 or so!