I saw a spot in a very nearby parallel universe, one of those "Hitler stayed a painter, Buddy Holly lived, Fidel Castro made major league baseball, zeppelins, yadda yadda yadda" universes. The walk would have been less time, but I wasn't sure my car would be safe there. So I didn't park there.
So instead I parked in a "people use colors to communicate, equality of real numbers is not transitive, and stripes go with plaid" universe. The streets were well-cleaned, and there was a pleasant-looking parking sign on the curb, but I couldn't read it, of course.
I got what I needed (some zeppelin parts and a Fidel Castro baseball card) and headed back to find my car, but I couldn't remember where I parked, so I went wandering looking for my car.
The Dinosaur Dimension was ill-smelling but comfortable, and the Flatland universe was hard to breathe in. The One Big Hawaii dimension was nice, and I was tempted to just stay there, but I didn't have my car with me, so I kept going.
Then I happened across a parallel tinymammoth in a "Monkeys can talk, robots are common, and pirates peacefully negotiated the removal of all taxes and non-essential government functions in 1755" universe. She happily directed me back to the parallel universe where I'd parked my car.
Along the way, I noticed something that the various parallel universes had in common. tinymammoth was in all of them -- though, in the "tiny mammoths evolved sapience first" universe, her LJ username was "naked ape" -- and in all cases, she was super-awesome.