What is the most dangerous part of the dive into a cave system?

What is the most dangerous part of the dive into a cave system?
The drive to the dive site. Cave diving done by properly trained and equipped cave divers is statistically safer than bowling… Yes! Bowling!

Okay, okay, the statistics say something like 3% of bowlers and scuba divers die each year, and since cave divers are a sub-set of scuba divers, I’ve made the assumption that a smaller percentage of cave divers die than bowlers. It’s been pointed out to me quite, er, pointedly, that this is a fallacy, but then we all know that there are lies, damn lies, and statistics. My point is that I’m trying to make a point. If you’re a bowler, please don’t dis me on this. Sorry for the digression.

So the most dangerous part is when you get in your car, truck or van and drive to the dive site. If you don’t want to die in an underwater cave, then don’t go IN the cave. Don’t even go in the water. Nothing is “perfectly safe” and neither is cave diving. It is a very dangerous activity for the untrained, unexperienced, poorly equipped… (Here’s the main point –>) But a well-equipped, educated and prudent cave diver has more to worry about driving to the dive site and walking to the water than what happens during the dive.