If all the showy razzle-dazzle of Tire Tagz is too high tech for your taste but you just have to advertise on taxi wheels, consider AdFleet's CAPTION invention. In common parlance, they make wheel covers that don't rotate. In their own words, "CAPTION are fitted onto vehicles in place of conventional wheel covers and consist of two main parts: a patented plastic disk and a hub system. The outward face of the disk is used to display artwork for a product, logo, or message. The hub, held in place with the vehicle's existing lug nuts, features a corrosion resistant metal fixture that separates the rotation of the wheels from the disks. The disks attach on to this fixture enabling the disks to remain rotation free while the vehicle is in motion."
Advertising on Taxi Wheels