I wonder if he ever found his car, and if he did, was he is any condition to drive it. I'm thinking, if his eyes were so bloodshot or if he had some head trauma, maybe he couldn't focus enough to drive, at night.
I know when I have a headache, the last thing I want to do is drive. Once I was a passenger at night and the oncoming headlights hurt my eyes so much, I had to close my eyes.
It’s just a guess on my part, but I doubt he had his car keys.