text: In the article, it says that driverless cars are forseen to "use half the fuel of today's taxis." In a world where everyone is clamoring to find alternative fuel sources, driverless cars would help tremendously. Cutting back on using up nonrenewable resources would be both cost effective and environmentally friendly. Even though it may cost more money to develop these new cars, using less fuel is one easy way to make up for that cost.