"As a Las Vegas tour bus company hailed one of its drivers for his
calm under pressure, authorities were looking into whether the man
violated what’s popularly known as Arizona’s “Stupid Motorist Law” by
driving into a flooded wash.

No one was hurt when the Las Vegas bound bus carrying 32 members of a
Chinese tour group was washed from Pierce Ferry Road and tipped on its
side roughly 90 miles southeast of Las Vegas on Sunday afternoon."

http://www.reviewjournal.com/news/nevada-and-west/bus-company-defends-employee-arizona-officials-mull-stupid-driver-charge