Justin Miller, of Northridge, Calif. was injured in the spring of 2008 while driving his family's Rhino. Miller, 16 at the time, ultimately lost a hand mangled in a rollover.
Credit: CBS
Doctors at Stanford University Medical Center performed seven surgeries but were unable to save Justin Miller's hand.
Credit: CBS
Justin Miller's mother Edna, seen in the family's Rhino before the accident that maimed her son.
Credit: CBS
Milton Grimes, a former sheriff's deputy who lives near Bakersfield, Calif., was injured in 2004 when he rolled his Rhino.
Credit: Courtesy Milton Grimes
Milton Grimes' leg is covered in scars after nine operations.
Credit: Courtesy Milton Grimes
Keisuke "Casey" Yoshida, president of Yamaha Motor Manufacturing Corp. of America; is seen third from left in a ribbon cutting ceremony in Atlanta in 2000.
Credit: AP
Ichiro "Ike" Miyachi, former Yamaha Vice President in charge of Rhino Development. He was a passenger in the Rhino prototype that rolled over in 2002 and sustained a foot injury.
