FRESNO, Calif. --Last summer's deadly Greyhound bus accident killed six people on Highway 99 in West Central Fresno. The California Highway Patrol says an 18-year old drunk driver of an S.U.V. is to blame for the initial crash. Minutes later a Greyhound bus smashed into the S.U.V. sending both vehicles and another off the road. One California fire fighter believes his invention could have saved lives that night.