Sell Claude's soul to Cthulu in exchange for wizard powers and a fixed autobahn!
"Claude, would you mind if I sold your soul to Cthulhu in exchange for wizardry and the autobahn?"
"Nope."
"Really?"
"No. What do you want a motorway for, anyway?"
Sell Cthulhu's soul to the autobahn in exchange for a fixed tyre and a second Claude!
"How about selling Cthulhu's soul to the autobahn in exchange for a fixed tire and an identical clone of you?"
"How about you get on with fetching those tools?"
Get the tire and jack and hand them to Claude, if he tries to make you do it then feign ignorance about tire changing procedure and go pretend to take a whiz in the woods.
You go around to the back of the car and pop the boot. A little light shows your bags, Claude's laptop bag, and -- behold -- a spare tire, jack, and lug wrench. You present them.
"Great," he says. "Now fix it."
"I know, you use the wrench to raise the car, the jack to replace the tire, and the spare tire for entertainment," says you. "I also need to wee, so if the extreme physical effort of all this causes my legs to give out..."
"How about you forget it and go have your piss," Claude says, taking the tools. "Make those flowers grow."
You weren't lying about that, actually; you do need to take a pee.
If you don't mind me asking, when you finally walk out into the dark woods to your right, do you squat or stand as you pee?