I had the car running, but I was putting something in the trunk, and two guys who looked kinda like Jack Black and that other guy from Tenacious D walked up and said “Nnnnnope! This is our car now. Thanks kid, scram.”
And I was like “w-w-w-w-” But then a miracle happened! Through the power of dream logic, I remembered I’d accidentally left my keys at work, and even though the car was running, it wouldn’t drive without the keys. Which gave me time to sprint back into work, grab my keys, and call the cops. Then I went back outside and taunted the would-be-carjackers til the cops arrived.
Then I went with the cops to a Snoopy/Peanuts convention. It was pretty cool.