Can happen to anyone...
Unfortunately, this can happen to any of us!
I was attending an airshow, we were arriving late, they "kept the airfield open late for us".
KSUA
As I was shutting down the tower said "goodnight, we stayed open 30 min longer for you". We shut down, they took us to our rental car and we took off. The rental cars were in the grass (see link) between taxi way D and R/W 34. The airport manager was there and gave the following directions: "That right there is Delta, drive up delta (north) make a left on charlie and take it to the FBO, the field is closed, you are cleared to cross any runway."
SO, I did what any red blooded American in a rental car would do...I floored it and followed his progressive taxi instructions. As the lights of the FBO got brighter someone in the car said "dude, thats a runway" But 2 of us heard the manager say "you are cleared to cross any runway". About 20 seconds after crossing, a light twin was completing his landing rollout...right behind us, probably cussing me up and down. I really thought I was doing everything correct and maybe I was, but I have been extra vigilant ever since.
For FAA people, this story may be fictitious.