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For new CAFE rules, automakers place high-stakes tech bets

Game-changing 2015 fuel economy rules are forcing vehicle development teams to make high-stakes bets on expensive technologies--bets that will separate the winners from the also-rans. Not only do federal rules target a 2015 fleet average of 35.5 mpg, up from the current 27.5 mpg for cars and 23.1 mpg for light trucks; they force automakers to bet on different technology packages for each vehicle segment. Companies that do best at mixing technologies while keeping down costs will have an advantage when buyers wince at higher stickers.

Honda NSX Concept GT takes on Suzuka

Honda hinted at the second coming of the NSX sports car in 2011, before bringing a concept to the Detroit auto show in January of 2012. Not more than two months later, the company said it will also go racing with the hybrid all-wheel-drive supercar. This has finally come to pass: On Monday, Honda uploaded a video to its Japanese YouTube channel, showing the Honda NSX Concept-GT -- the racing version -- in action at the Suzuka Circuit.

Ian Callum meets graffiti artist Mr Kaves and his one-off Jag [w/video]

A backstreet garage in Brooklyn, New York, is home to the company that preps Jaguars and Land Rovers for films and TV product placement. Hidden in the rear is a full-sized Thomas the Tank Engine, the presence of which no one can explain. Nearer the front is an XKR, delivered a couple of days ago for a unique paint job.