Paris Hilton's party parade ended with a bang Tuesday night after her latest boyfriend, Stavros Niarchos, plowed her brand new $162,000 Bentley into the back of a parked delivery truck.

It all happened outside the trendy Hollywood club Element, where a camera-shy Niarchos got behind the wheel of Hilton's ultra-expensive ride.

After Niarchos narrowly missed a bystander and hightailed it from the scene, a distraught voice could be heard from the car, saying, "Baby, I'm (expletive) scaring myself."

That's when the night turned from bad to worse. TMZ.com's camera caught up with the group, which included "Laguna Beach's" Talan Torriero, moments after police pulled over the car. Talan then made a startling confession, stating, "I'm the only sober one."

TMZ.com did not witness any evidence of a field sobriety test being given, and police let everybody get back into the Bentley. Stavros darted down an alley and hopped a fence, climbing back into the damaged ride on another street.

The damage to Hilton's car could cost as much as $7,000.