Lindsay Lohan was arrested on suspicion of drunk driving early Saturday morning. Cops also found a substance in her car that is believed to be cocaine.

Lindsay Lohan was arrested on suspicion of driving under the influence Saturday after her convertible struck a curb, and investigators found what they believe is cocaine at the scene, police said.

Lohan, 20, and two other people were in her 2005 Mercedes SL-65 when it crashed on Sunset Boulevard around 5:30 a.m., Sgt. Mike Foxen said. It appeared the actress was speeding, Lt. Mitch McCann said at an afternoon news conference.

Officers at the scene found a “usable amount” of a drug tentatively identified as cocaine, McCann said. He declined to say where the drug was found other than to say Lohan was not carrying it.

One would hope that Lohan would have learned from former pal Paris Hilton’s jail sentence to not drink and drive. But many celebrities and especially young people believe they are above or beyond the law. Thank goodness no one was seriously hurt.

Remember it was just two weeks ago that these cell phone video stills surfaced of Lohan doing coke in the bathroom of a club with her girlfriends.

UPDATE: Lohan’s Rep Releases Official Statement Regarding Arrest