The Corpus Christi Police Department says that one man was lucky to walk away alive after a rollover accident that happened on the Crosstown Expressway.The accident happened just after 10 a.m. Friday. Police said the 19-year old driver appeared to be driving at speeds close to 100 miles per hour.Investigators said that, because of the nature of the crash, they are amazed he walked away with few injuries."The injuries that he sustained were non-life threatening," CCPD Officer R.C. Nunez said. "I didn't see any obvious lacerations or anything like that."The driver was taken to Christus Spohn Memorial to check if he had any internal injuries. Police say they expect to issue a citation in the future.