One person's Szechuan sauce is another person's treasure.

As you've already heard, McDonald's took advantage of Rick and Morty fans by offering a one-day only special - limited-edition packets of Szechuan sauce at participating restaurants. It backfired a bit, considering that most locations only had 20 packets to give away, and the packets started showing up online for sale.

And while the company has promised a return on the popular sauce, a Michigan woman has taken full advantage of her little packet.

Rachel Marie, a 23-year-old graphic designer from Macomb, drove to Detroit and waited in line until 2 PM for a packet of the coveted sauce.

She posted a pic of the sauce to Pin Nation, a Facebook group dedicated to trading pins (don't ask me what that is - I'm old) and received several offers on it - one of which was 2000 Volkswagen Golf Mk4.

The man drove the car to her house to prove that it runs, and also assured her that he has another car. He says that he doesn't want any attention, he just wanted the sauce.

Rachel now has the car in the shop, getting it souped up. The car is worth about $5K. There are currently packs of the sauce being sold online for upwards of $2K.

Not a bad trade!