Today we all continue our preparations for the Detroit Auto Show, with perhaps the most impressive detail yet revealed being the 2013 Dodge Dart's claim of 40 mpg combined. That's a significant number for a non-hybrid, and not just for the Fiat-Chrysler merger.

In non-show news, we just got back from a three-day stint at the Skip Barber Racing school, driving the MX-5 Cup cars. Want to know what a serious school is like, and if it's for you? Read our review.

2013 Dodge Dart hits 40 mpg combined

2012 Detroit Auto Show coverage preview

Skip Barber 3-day Mazdaspeed racing school review

Via Motors to use A123 lithium-ion cells in electric pickups

Land Rover Defender Concepts now come in Firenze red

Porsche Cayenne Diesel confirmed for 2012 launch in U.S.

The Chrysler E-Class is this week's Guilty Pleasure

Renewable fuels fall short of non-corn ethanol goal

MIT study says fatter cars are cost us gas mileage

Ford's F-Series trucks are going on 30 years as the best-selling vehicles in the U.S.