BMW has an augmented reality "smart windshield technology," which is seems much like what Google is doing with Project Glass.
The following video has been around for a while, but it's picking up some attention today, thanks to psfk.
"One second and 28 metres," BMW says on its site. "That’s the time required to take your eyes off the road and read 100 km/h on the speedometer. The BMW Head-Up Display from BMW ConnectedDrive projects the current speed or navigation instructions directly into your field of vision − letting you keep your eyes on the road."
"The display includes information such as warnings, messages from Speed Limit Info and the preselected speed in Dynamic Cruise Control," the company adds. "Complicated junctions become easier to negotiate thanks to the High-Guiding function of the navigation and its clear display of the road layout."
BMW makes a point to note that the virtual imagery is is all "clearly legible" in any lighting condition. The height can be adjusted, as can the brightness.
How long until Google cars come with Google Glass windshields?