Great Scott! It's an 8-foot (2.4m) long DeLorean cake! It was baked to celebrate the 25th anniversary of Back To The Future and the Blu-ray releases, where cast and crewmembers tucked in—despite it leaving flaming tyre tracks.

That's Michael J. Fox taking a peek at the cake, no doubt wondering if he can squeeze a banana peel and Miller beer can into the Mr. Fusion Home Energy Reactor. [Gizmodo Australia]
UPDATE: I'm told that the cake was created by Charm City Cakes, and will appear in a TV show called Ace of Cakes next year.