Billboards in Google Street View may carry Google ads

The Street View feature in Google Maps, actual photos taken by one of its vehicles equipped with nine cameras that take a series photos as it drives down a road that can be assembled into a panorama, is my candidate for the most useful tech innovation of the past few years.

Like many innovations, however, I've wondered how Google plans to make money to justify the expense of its fleet of camera equipped cars. Now we see at least part of the grand strategy -- selling advertising space on the billboards that appear in the photos in Street View.