After the stickup, he left in his wheelchair and was last seen motoring down a nearby street toward El Camino Real, a major thoroughfare.
Witnesses say the man's legs were wrapped in bandages and his right leg was sticking straight out while he zoomed away.
Police are looking for a white Ford van that the suspect may have been hoisted into after the robbery.
Investigators don't know whether the wheelchair was just a prop or whether the suspect was truly disabled.
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Information from: San Jose Mercury News, http://www.sjmercury.com