View video here.

[GRAPHIC: The most dangerous vehicle? Produced by David Gelber]
MALE VOICE: Six years ago the Honda Corporation decided to create a whole new sport. It took the three-wheel motorcycle known as an all-terrain vehicle, or ATV, which had been around since 1970 as a farm and utility vehicle and spent tens of millions of dollars to market it as a plaything the whole family could use out in the woods, on dirt roads and in the desert away from the hustle and bustle of street traffic.
In just five years the four leading motorcycle manufacturers, all Japanese, sold 2.5 million of them in this country alone. The trouble is that during an ATV's average lifespan of seven years, there is a one in three chance that the ATV will carry its rider to serious injury or death. That according to the Consumer Product Safety Commission. Government experts say it is by far the most dangerous vehicle on the market today.
Nelson made this slow motion film on a course he set up to demonstrate just how easily ATVs flip over. To keep one of them upright, the rider must carefully shift his weight to compensate for sudden lurches by the machine. But watch what happens when Nelson, traveling at 18 miles an hour, hits two small mounds on a level track. The bumps throw him off balance. There is no mechanical suspension to absorb the jolt and he can't shift his weight enough to prevent this 300-pound ATV from flipping over on his back. This won't happen every time, but it can happen at anytime.
But in the past five years, more than 600 riders, nearly half of them children have died in ATV accidents. Wendy was 9-years-old when she hopped on the back of an ATV.
FEMALE VOICE: And while riding they made a turn and when they turned, the ATV flipped over and it landed on Wendy and it broke her neck.
FEMALE VOICE 1: And as things go wrong...
MALE VOICE: Wendy Moliter [phonetic] is now a respirator dependent quadriplegic. In order to avoid a jury trial in her case, Honda agree to pay $5.7 million. Craig McClellan is Wendy's attorney.
CRAIG MCCLELLAN: I think that, that the Honda manufacturer in our case was very concerned about having a jury tell it that it's responsible for the lifeless crippled bodies of the children that are strewn across the off-road areas of this country.