Yeah... autocrossing is fun, but nothing compared to a DE. Apart from the speeds involved, at an A/X you stand or sit around for an entire day in exchange for five, maybe 6
minutes of track time.
At a DE, over the course of 2 days, I get something on the order of four or five
HOURS of track time - all in blocks of 20 to 30 minutes each.
Every time I've come home from a DE, I'm *exhausted*. Every time I've come home from an A/X, I'm exhausted, too. However, I think it's more from boredom than from physical or mental exertion.