As for automation....
"I would count the miles,” he says. “As soon as the thirty-sixth came, I would change rolls, put the exposed roll in a canister, enter its number on a log sheet, take the next one out of the cooler, and insert it. I got to where I could do all that in less than a minute, while steering with my kneecap.”
It wasn't that rudimentary. You can read more about his set-up if you're curious.
Here's a tiny sampling of Matt's photo journey:
Visit the website for a cool mapped photo album or to watch an automated slide show. He's driven several other routes too. American Mile Markers project by Matt Frondorf.