JW sends me to Technology Review: Europe's Driverless Car (Driver Still Required) - :
""Driverless" technology will initially require a driver. And it will creep into everyday use much as airbags did: first as an expensive option in luxury cars, but eventually as a safety feature required by governments. "The evolutionary approach is from comfort systems to safety systems to automatic driving," says Jürgen Leohold, executive director for research at Volkswagen Group in Wolfsburg, Germany."
"The average age of the approximately 240 million light-duty vehicles on U.S. roads has risen about 12 percent in the past five years, according to automotive data research firm Polk. The average car or light truck on the road last year was 10.8 years old, up from a 9.7-year average in 2006. Cars were, on average, 11.1 years old in 2011, while trucks were 10.4 years old, Polk said."