Your Tour is the best tool for creating multi-day road trip itineraries, and this Belgian-based start-up stands out for its deep coverage of Italy, France, Spain, Andorra and, randomly, Florida.

BBC: Tools to plan your itinerary faster

Whether or not prison works as a crime-fighting tool, how much further down the road of ever more frequent imprisonment can America go?

ECONOMIST: Prisoners

Developed by Two Steps Beyond, the app started out to help those on the road predict their mobile coverage, but has become a useful tool for many, and picked up critical acclaim along the way (with Wired voting it an essential tool in their 2011 App Guide).

FORBES: Check Out Cellular Data Coverage In Advance With 'Coverage?' For iOS

Also, your vehicle can upload its position to road authorities, so they can use variable road tolls as a traffic management tool -- raising the price on busy stretches during rush hours.

CNN: Behold the?all-seeing, self-parking, safety-enforcing, networked car