Google's Andy Rubin brought more than just a Nexus S in his bag of goodies tonight. On stage at D: Dive Into Mobile, the man has brought with him a prototype Android tablet from Motorola. It's got video chat, an NVIDIA processor, a "dual core 3D processor." Little else is known -- Rubin immediately turned his attention to a new release of Google Maps -- but we wouldn't be surprised if we were looking at Stingray, a tablet rumored for a launch on Verizon shortly. Is it 7 inches? 10? We honestly don't know -- but our gut tells us on the bigger side of the spectrum, which would line up with rumblings that the Stingray wou
