In the United States, human error accounts for 95% of car accidents, with 33000 fatalities and 2.35m injured each year. Behind the house, the second most expen

In the United States, human error accounts for 95% of car accidents, with 33000 fatalities and 2.35m injured each year. Behind the house, the second most expensive purchase in a typical person's life is their car, and yet in a car's lifetime, only 2.56% is spent driving on roads with the remainder spent parked or in traffic.