John Carlos Baez on Nostr: I rented a car, but they didn't have the sensible compact I wanted so they gave me ...

I rented a car, but they didn't have the sensible compact I wanted so they gave me Ford Mustang. What the hell does this pull chain in the trunk do? "Pull to let kidnapped victim scamper to freedom?" Is this something Mustang owners regularly need? And why the improbably high arc on the parabola? "Pull to let gremlin jump out and run off gibbering manically?"