Tesla and Google are both driving toward autonomous vehicles. Which company is taking the better route?

Google and Tesla agree autonomous vehicles will make streets safer, and both are racing toward a driverless future. But when Google tested its self-driving car prototype on employees a few years ago, it noticed something that would take it down a different path from Tesla. Once behind the wheel of the modified Lexus SUVs, the drivers quickly started rummaging through their bags, fiddling with their phones and taking their hands off the wheel -- all while traveling on a freeway at 60 mph. "Within about five minutes, everybody thought the car worked well, and after that, they just trusted it to work," Chris Urmson, the head of Google's self-driving car program, said on a panel this year. "It got to the point where people were doing ridiculous things in the car."