I am thankful that your parents are in good health, and that the motorcycle riders are not dead
.
I ride a motorcycle, and I'm surprised that an accident involving speeds of over 60MPH, and a passenger, in which the Motorcycle runs dead on into a car didn't result in a fatality. They usually do.
Your parents are OK because they were surrounded by 3,000lbs of Camry. That motorcycle rider had no such protection.
I just cannot see why people drink and drive at all, but ESPECIALLY motorcycles. Not only are you putting other people in danger, but just by sitting on the beast, the odds of debilitating and fatal injury are already stacked against you, so why add alcohol to the mix?