Every morning, at about 8 a.m., Anthony Levandowski walks out of his house in Berkeley and folds his six-foot-six-inch frame into the driver's seat of his white Lexus. Levandowski is embarking on his daily commute to work. It's the most ordinary, familiar moment there is. Most of us perform this ritual five times a week, 50 weeks out of the year. Levandowski's commute, however, is decidedly different. He's got a chauffeur, and it's a robot.
Levandowski backs out of his suburban driveway in the usual manner. By the time he points his Google self-driving car down the street, it has used its GPS and other sensors to determine its location in the world. On the dashboard, right in front of the windshield, is a low-profile heads-up display. manual, it reads, in sober sans serif font, white on black. But the moment Levandowski enters the freeway ramp near his house, a colorful graphic appears. It's a schematic view of the road: two solid white vertical lines marking the boundaries of the highway and three dashed lines dividing it into four lanes. The message now reads go to autodrive lane; there are two on the far side of the freeway, shown in green on the schematic. Levandowski's car and those around him are represented by little white squares. The graphics are reminiscent of Pong. But the game play? Pure Frogger.
There are two buttons on Levandowski's steering wheel, off and on, and after merging into an auto-drive lane, he hits on with his thumb. A dulcet female voice marks the moment by enunciating the words auto driving with textbook precision. And with that, Levandowski has handed off control of his vehicle to software named Google Chauffeur. He takes his feet off the pedals and puts his hands in his lap. The car's computer is now driving him to work. Self-driving cars have been around in one form or another since the 1970s, but three DARPA Grand Challenges, in 2004, 2005, and 2007, jump-started the field. Grand Challenge alumni now populate self-driving laboratories worldwide. It's not just Google that's developing the technology, but also most of the major car manufacturers: Audi, Volkswagen, Toyota, GM, Volvo, BMW, Nissan. Arguably the most important outcome of the DARPA field trials was the development of a robust and reliable laser range finder. It's the all-seeing eye mounted on top of Levandowski's car, and it's used by virtually every other experimental self-driving system ever built.
This year will mark another key milestone in self-driving technology. The National Highway Traffic Safety Administration (NHTSA) is widely expected to announce standards and mandates for car-borne beacons that will broadcast location information to other vehicles on the road. The beacons will warn drivers when a collision seems imminentâ€”when the car ahead breaks hard, for example, or another vehicle swerves erratically into traffic. Automakers may then use this information to take the next step: program automated responses.
Automatic driving is a fundamentally different experience than driving myself. when I arrive at work, I'm ready. Levandoswki's commute inside of his Google self-driving car is 45 miles long, and if Chauffeur were perfect, he might use the time napping in the backseat. In reality, Levandowski has to stay awake and behind the wheel, because when Chauffeur encounters a situation in which it's slightly unsure of itself, it asks him to retake control. Following Google policy, Levandowski drives through residential roads and surface streets himself, while Chauffeur drives the freeways. Still, it's a lot better than driving the whole way. Levandowski has his hands on the wheel for just 14 minutes of his hour-long commute: at the very beginning, at the very end, and during the tricky freeway interchanges on the San Mateo Bridge. The rest of the time, he can relax. "Automatic driving is a fundamentally different experience than driving myself," he told automotive engineers attending the 2012 SAE International conference. "When I arrive at work, I'm ready. I'm just fresh."
Levandowski works at Google's headquarters in Mountain View, California. He's the business lead of Google's self-driving-car project, an initiative that the company has been developing for the better part of a decade. Google has a small fleet of driverless cars now plying public roads. They are test vehicles, but they are also simply doing their job: ferrying Google employees back and forth from work. Commuters in Silicon Valley report seeing one of the carsâ€”easily identifiable by a spinning turret mounted on the roofâ€”an average of once an hour. Google itself reports that collectively the cars have driven more than 500,000 miles without crashing. At a ceremony at Google headquarters last year, where Governor Jerry Brown signed California's self-driving-car bill into law, Google co-founder Sergey Brin said "you can count on one hand the number of years until ordinary people can experience this." In other words, a self-driving car will be parked on a street near you by 2018. Yet releasing a car will require more than a website and a "click here to download" button. For Chauffeur to make it to your driveway, it will have to run a gauntlet: Chauffeur must navigate a path through a skeptical Detroit, a litigious society, and a host of technical catch-22's.