Google predicts driverless cars on public roads in 2-5 years.

DETROIT (AP) — The head of self-driving cars for Google expects real people to be using them on public roads in two to five years.

The small, bulbous cars without steering wheels or pedals are being tested at a Google facility in California.
Urmson wants to reach the point where his test team no longer has to pilot the cars.
Google Inc., which is based in Mountain View, California, may face state regulatory hurdles depending on where it chooses to test the cars in public.

He predicted that the cars would fail at some point on public roads, but said Google's cars have been driven more than 700,000 miles on public roads without causing a crash.