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(Updated June 11th, 2012 after Apple’s WWDC with news about Siri-Maps integration and the Eyes on Siri feature.) Of technologies sporting the largest gaps between vision and reality, I’d rank talking car computers up there with videophones, laser pistols and flying cars. Who wouldn’t want to be zooming down I-5 while telling your personal KITT to book a reservation for two at the nearest four-star restaurant serving gazpacho? Or drilling into real-time sales pipeline data....