Which is less safe - 4 guys in a car driving fast for one day, or me and millions like me driving billions of miles pretty needlessly, no attempt to carpool, rarely taking public transportation, etc etc etc.
I'll throw stones and whine about those guys' recklessness, as soon as I start biking to the grocery store instead of driving when it's 95F out.
Life is risky, and we all do things all the time for fun and convenience that collectively put others at risk. But we all do it anyway, because it's called living.
Congratulations Cannonball Runners! Hope you had a h*ll of a good time.