Assembly

I like to walk through the drive through lane at the bank and ask for a loan for a car.
Usually, I get a laugh, but one day – that pneumatic tube machine wheezes and PLOMP! It lands on the hopper.
I open it up, and there”s a set of car keys.
I pull the keys out and hit the Call button – “Very funny,” I said. “What should I do with these?”
PLOMP! Another tube shows up. There”s an instruction booklet in there for assembling a car.
PLOMP! Some spark plugs.
PLOMP! A fanbelt.
PLOMP! PLOMP! PLOMP!
This could get messy.