Per ESPN.com:

Lane Kiffin was behind the wheel of his leased Lexus in August when, the coach said, he fell asleep and crashed the car, a high-ranking University of Tennessee official confirmed to ESPN.com's Mark Schlabach on Tuesday.

(...)

Hamilton interviewed Tennessee assistant football coaches to corroborate Kiffin's whereabouts that night, and one assistant confirmed having seen the coach in the athletic offices at approximately midnight. The accident occurred in the early morning hours. Tennessee officials said the time between Kiffin's last being seen in the offices and the crash was unaccounted for. The university did not pay for the repairs to the damaged car, according to the source.

At least there's plenty of schaudenfraude going around to keep us smiling during this grueling offseason.