The cars of today are costly in more ways than one. In 2010, there were 35,000 deaths due to car crashes in the U.S., and car crashes cost the economy $230 billion every year. Traffic congestion costs the U.S. economy a staggering $87.2 billion a year. As a nation, we waste 4.2 billion hours in traffic each year—that’s one work week for every traveler. The environment takes a beating from the cars of today as well. Twenty-two percent of carbon dioxide emissions come from cars and trucks, and 2.8 billion gallons of fuel are wasted each year due to congestion. Fortunately, self-driving cars figure…