Many remember the disastrous situation that occurred when one of Uber's driverless cars hit and killed an Arizona pedestrian. This fatal incident led to the company's decision to take their cars off populated roads.
Last October, one of the deadliest transportation accidents in U.S. history involved a limousine in upstate New York. A converted 2001 Ford Excursion crashed, killing 20 people including the passengers, the driver and two pedestrians. The vehicle had a history of mechanical problems.