If you've ever experienced haptic feedback in a car (GM's terrifying butt-shakers come to mind—those suckers really get your attention), you'll probably see where this is going. These Lechal haptic-feedback shoes use Bluetooth connectivity to give you quick navigational hints.

Walking to a restaurant in an unfamiliar city? The right shoe buzzes when it's time to turn right. Simple. Now, how does it apply to cars? Our first thought: getting familiar with unfamiliar tracks, particularly rally stages.

It's easy to relegate all this connected-world, wearable computer stuff to the impractical whims of Silicon Valley minds, but drop your preconceptions and consider the possibilities in the automotive realm, and things start to get really interesting.