I do drive to work but here we have a working lunch. I'm the 3rd shift manager at a gas station so there's no one to relieve me for my lunch or breaks. I clock out but if someone comes up I have to clock back in to wait on them. Also not allowed to open the doors between the hours of midnight and 6am. But a car nap does sound wonderful
Caffeine even in large doses doesn't seem to do anything for me. I've also tried those energy shots and ephedrine pills and nada. So far what's kept me awake the most is water. IF you drink 100oz of water over an 8 hour shift you constantly have to pee. IF you constantly feel like you gotta pee then you aren't falling asleep

I've got to be the best hydrated person on the planet