'Tis a puzzlement!
I borrow the line from The King And I after reading this story: someone's stealing Hondas and Saturns from the Junction train station parking lot and returning them a few days later, in still useable condition (if you don't mind a few cigarette butts).
Which reminds me, one of the things I learned during my years of commuting to the WTC was: don't leave a brand-new car at the train station parking lot.

It's Peeps time!
Slate has the scoop.