I've had my share of crazy chases...
May 15, 2003, my first HIGH RISK chase where I was up for 22.5 hours straight, most of that driving. I was by myself on that day and remember the excitement of chasing down my first tornado in years kept me going most of the way home. The 4 hours of sleep that bookended that chase was surrounded by a closing shift the night before, and a 12 hour opening shift the morning after.
Did another lengthy chase back on June 1 with Roger Hill and his company where I ran around for almost 23 hours straight... I think I cheated a brief nap in there somewhere, though.
Even this year, I've caught midnight flights and slept two hours on the plane before roaming the southeast this year. Did that twice where I caught a flight after working the entire day and going straight to the airport from work and going straight back to work from the airport.
I don't want to use the saying "as I age", but the thoughts of those 20+ hour marathon drives aren't on my top list of things to do. Back in my early years where work wasn't as flexible and money for hotels wasn't there, it was the best way to get out and back. Now, I just assume shave off a few hours the night before if I have a long way to go to get where I need to be.
Keeping myself awake mixes bad music, stopping every so often at gas station, Gatorade, and cell phone. I find I use most of my monthly minutes catching up with Ohio buds as I drive across the Plains. That's the best way for me to stay awake and pass the time... just talk to someone. Sometimes that's even myself! And man do I have some good conversations with myself!
I've found I'm a bit more concerned anymore with losing my reaction time in the event someone or something jumps in the road in front of me. I get quick reality checks when I see tumbleweed fly in front of the vehicle and I end up hitting it, knowing if it were a deer or another car, I would've done the same cause I was too tired to move. It obviously startles and gets my attention, but its that split second I lose that will get me. I just don't like doing it anymore. The bragging rights were fun for a while, but I'll wimp out for the snooze more times than not anymore.
Partners help not only for passing time (and passing gas), but splitting the driving. I think Tim, Verne, Jon V, and myself did this back in April where we marathoned back through a ground blizzard in eastern Colorado only to get home around 4am. Two vehicles with multiple folks made the drive a bit more bearable, although I don't recall ever sleeping. Again, the excitement of the day's events combined with driving in interstate ruts helped shave the tired issue.