The crash killed 20 people including 18 in the limo. The limo company has had scrutiny over the years for failing DMV inspections and huring unlicensed limo drivers. There are some suspicions because the limo looked intact. Some people say there's a chance Carbon Monoxide could have played a factor. There's also rumors that the driver was intoxicated. Another theory suggests that the brakes were out on the limo.