Lindsay Lohan's car was mangled and she was taken to the emergency room after her Porsche slammed into the back of an 18-wheeler on the Pacific Coast Highway, reports TMZ.

As can be gleaned from the pictures, her car was totaled and towed away, while she was taken to the hospital.

Eyewitnesses say that Lindsay and her passenger (her assistant) were bleeding and bruised after the crash, but that they were conscious.

And for what it's worth, Lindsay is saying the accident wasn't her fault, that the 18-wheeler had cut her off.

Developing...