The Oct. 20 Deal of the Day brings us the Smart Car Kit for the HTC ThunderBolt. It's a car dock that automatically launches one-touch navigation to Footprints, the phone dialer and GPS nav. It's got a suction cup and rotating arm so you can position it as you see best, comes with a car chager, and it fits the HTC ThunderBolt extended battery. And it's available today only for just $39.95 -- that's 33 percent off! Get yours while supplies last.