Cee Lo No Top, No Problem

11/5/2012 10:40 AM PST

Cee Lo Green -- No Top, No Problem

Cee Lo Green
is stickin' with sexy black hot rods -- a classic convertible and looking cool as a cucumber.

"The Voice" judge -- who's tooling around L.A. today in the whip -- is under investigation by the LAPD for sexual battery, after a woman claimed he slipped her ecstasy at a restaurant and then sexually assaulted her back in July.  She says she passed out in the restaurant and the next thing she knew she was naked in a bed with Cee Lo in the room.

The singer has adamantly denied any wrongdoing.