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Future Audis may time traffic lights for you

Here's a trick efficiency-chasing hypermilers have been using for years: spotting the cycles of stoplights from 100 to 200 yards out and letting the car coast up to the light just before it turns green, then carrying on without ever letting the car come to a complete stop. These hypermilers, along with professional truck drivers, do this because they know that accelerating from a standstill burns the greatest amount of fuel, and because letting a car coast up to the light with the automatic transmission downshifting by itself is easier on the transmission than stomping on the brakes right beneath the stoplight. Oh, and it's easier on the brake pads as well.

Nissan recall due to faulty airbag sensors

Nissan is recalling the Altima, Leaf, Pathfinder, Sentra and Infiniti JX35 vehicles from model year 2013 due to a problem with passenger airbag sensors. According to NHTSA, there's a chance the sensors within the passenger Occupant Detection System (ODS) were manufactured out of specification, which could keep the passenger airbags from deploying in a crash. Nissan will notify owners in April, and dealers will inspect affected vehicles, replacing faulty sensors at no charge to the customer.

Video: FiDU technology creating lightweight, inflatable metal structures

This short video, featuring designer Oskar Zieta, details the process and design possibilities behind products developed with FiDU (Freie Innendruck Umformung – "free internal pressure forming") technology. Zieta, a Polish designer, explains how the lightweight yet robust metal appears as a soft object yet when you touch it you realize that it is actually a hard metal. "Working with FIDU technology is similar to carving clay," Zieta explains.