THE O.C. star Rachel Bilson has suffered partial amnesia since cheating death in a teenage car crash. The actress was in a coma for two days following the smash, which left a friend paralysed - and she has struggled to recall events from her near and distant past since. The 26-year-old says, "I was involved in a car accident when I was 14. I had a concussion and blacked out. I don't have much of a memory now."