Google plans to use trucks equipped with lasers and digital photographic equipment to create a realistic 3D online version of San Francisco, and eventually other major US cities. The move would trump Amazon's A9 service, which offers two-dimensional photos of buildings on US city streets. The trucks would drive along every San Francisco street using the lasers to measure the dimensions of buildings, to create a 3D framework onto which digital photos can be mapped. This would complement the mostly top-down view of San Francisco available through Google's Keyhole satellite photo application. The goal is to create similar 3D online versions of other cities in the US and overseas.