I stopped by our local grocery store (a Food Lion) this afternoon to pick up a few items and upon returning to the car found what appeared to be an entire cup of coffee poured across the hatch.

The stream started just below the glass on the right side and went down and to the left to the spoiler. From there it appears the person poured the remaining coffee along the spoiler, as the entire lenght of the wing was full of coffee.

It certainly could have been a lot...

Speedymike