I think the same....I always tack on at least 2 or 3 days just in case, particularly if its near a major holiday or during winter time....then I add one extra day to that just because I live on an island in the middle of the pacific ocean where it takes minimal 5 hours just to reach California and heaven forbid there is any delays coming out of Hawaii which is not that uncommon lately....
Ive read even Fed Ex is having delay problems because of this cold front that is moving thru the states...
I do wonder what ultimately is the effect on our cars sitting idle in boxes doing nothing for a few days (or some worst case scenarios being kicked around like a football during shipping which I think we all agree certainly doesn't help any LOL).... does cutting it as close as possible minimizes those chances, but if look at from a more general opposite view....you cant race if you don't have a car there... so ill always send in earlier than later....
of course the best would be if I could just get myself to hop on a plane and fly over to the races with my cars in hand! Heck, I bet John would let a bunch of us camp out in his backyard and tune on the track a few days before the race if we asked nicely!
I am considering flying in for Nationals however....