Actually, a variation on the old "some other dude" defense:
'The Unicorn Was Driving'
Billings, Mont. May 14 – A man accused of drunken driving and crashing his truck into a lamp-post told police a unicorn had been at the wheel when it careered off the road, reported local media on Wednesday…
Phillip Holliday, 42, pleaded not guilty to felony charges of criminal endangerment and drunken driving when he appeared before a court in the western state of Montana on Tuesday, reported the Billings Gazette.
Holliday insisted a unicorn was driving when he slammed into the street lighting, shortly after jumping a red light.