The first leg of the adventure race, Dakar Rally, got off to a horrible start Saturday when a driver veered into the crowd in Argentina.
Newcomer, 47-year-old Guo Meiling, lost control of her X-Raid Mini after a jump and hit 11 people, five of which were children.
Emergency crews were immediately called in and two people, a father and a son, were flown to the hospital via helicopter in serious condition.
Chinese driver Guo has dropped out of the race.
The prologue race, in which Guo crashed, gives drivers a small taste of what the entire race is like.
The two-week long adventure course is one of the longest rallies in the world. It also requires drivers to fight fatigue while navigating a difficult off-road course for hours at a time.
The race continued today, although weather conditions forced organizers to shorten the course from 316 miles to 240 miles.
Helicopters must be able to follow to ensure safety, which is a stage that was cancelled yesterday.
Red Bull is a sponsor for the event and has a team of riders and drivers that compete on two and four wheels.
The race is open to quads, cars, trucks and dirt bikes.
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