Don't worry though a few days later I was fine.
Anyway, the longest road trip I've driven is the annual trip I take to Alabama to visit relatives. This usually takes about ten hours, including a stop for lunch and the odd bathroom stop. Not nearly the kind of hours some people here have put in, I'm sure, but I'd probably get there in nine hours or less if Georgia traffic wasn't terrible. I think Georgia interstates are in a perpetual state of construction or refurbishment. Once I get into Tennessee, it's smooth sailing.
Now, I've had worse for airline trips, but that's probably for another topic.
I hadn't planned on driving straight through, I wanted to drive until I got tired but by the time I started getting tired I was only about 5 hours away from home. The last 2 hours were a real challenge but at that point it didn't make sense to to rent a hotel room so close to home so I had my wife stay awake and talk to me...Which you would think would put me to sleep but it didn't :)