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Nissan simplifies tire inflation with its new warning system

Nissan will install tire-pressure-measuring systems on its Quest and Altima vehicles that alert the driver filling the tire when it reaches an acceptable level. Most people don't carry a tire-pressure gauge in their car. A new federal study shows that underinflated tires triple the risk of an accident.

Ironman Stewart retires, sells all

The off-road racing accomplishments of Ivan "Ironman" Stewart might never be matched: 82 major wins in desert racing, 17 of them in the crash-and-bang Mickey Thompson stadium series, three Baja 1000s and others too numerous to squeeze in here over a career that spanned 30 years. The thing that really sets him apart is that, while competitors shared driving duties over the long desert courses, Stewart did the vast majority of them alone, with no relief drivers--just him and the dirty, dusty desert. But even legends want to retire someday.

Citroën invites design ideas via Facebook

Citroën has launched a Facebook app calling for users to select design features for what it calls a special edition car, the first crowdsourced car in the UK. Rather than the genuinely design-led competitions we've seen recently from Renault (Twizy) and Citroën's own DS3, ‘You Like It, We Make It', offers six configurations such as exterior and interior color scheme, technology options like Bluetooth and SatNav, alloys, and the number of doors the vehicle has. The Citroeën C1 Connexion special edition will be kitted out with the most popular ideas and those participating via the app will be in with a chance of winning the car when it goes on sale later in the year.