First came Cadillac (naturally), and now some of General Motors' other remaining brands are finally scratching the WiFi itch. Beginning next month, Buick, Cadillac, GMC and Chevrolet dealers will all begin offering up Autonet Mobile's $499 WiFi router as a dealer-installed option, though it's on you to pony up the $29 (or more) it takes to get said device online month in and month out. As always, you'll also get a docking station to ta
