I just burst out laughing at your suggestion for Sam and Dean to tow a woodchipper behind them wherever they go. Dean would think it's an insult to his baby but maybe if it was painted the same glossy black?

Besides answering questions about how to take care of something would be really easy.
"How will you take care of that Wendigo?"
"Woodchipper."

Cleaning would be a pain though.

Sidenote on the two brothers in a small car: I love when Sam hits the end button on his phone, the car honks.