text: This question leads to what is probably the biggest issue with these cars: many developers of driverless cars claim that these vehicles would improve public transportation and, "use half the fuel of today's taxis," but what about the safety of the passengers? A truly driverless car would leave its passengers helpless in the face of an impending accident, and the addition of entertainment systems for part-time drivers would likely not give the drivers enough of a warning to react in the case of an emergency situation.