92 dbA sound limit
$449 entry fee before July 20
$499 entry fee between July 21 and October 1
$549 regular entry fee 
3 groups, novice, intermediate, advanced and expert scheduled
Passengers allowed

Two Hour Enduro 
$499 entry fee (includes practice and qualifying)
Cars must meet NASA race safety rules
Transponders required
4 classes:
U: Unlimited. No open wheel cars.
A: Lap times of no faster than 1:35
B: Lap times of no faster than 1:40
C: Lap times of no faster than 1:45