Corpus Christi Police Traffic Investigators are searching for a hit and run vehicle that fled the scene of a crash in the 7500 block of South Padre Island Drive just after 9 PM Saturday night. The crash investigation revealed that a 21 year old female was driving west along the access road when she lost a mattress out of the back of her black Dodge Ram truck.  She stopped to retrieve the mattress that blew out and while she was in the process of pulling it out of the roadway, she was struck by a vehicle.  A witness told Officers the vehicle that struck the female was a white, possibly a Hyundai, SUV driven by a person with dark skin tones.  The hit and run vehicle had major damge to the front end and the air bags had deployed. The driver of the hit and run vehicle left the scene going west on the access road toward Rodd Field Road.  The female that was struck, was tranported to Spohn Memorial Hospital by CCFD EMS with very serious injuries. If you know anything about this crash, or information regarding the hit and run driver or vehicle, please call Traffic Investigators at 361-886-2693.