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Alfa Romeo 4C Spider revealed: Geneva Motor Show

The Alfa Romeo 4C Spider (pictured) revealed in Geneva The Alfa Romeo 4C is the epitome of a modern ‘supercar’, with ultra light weight (for a production car) allowing the 4C to produce very good performance from its modest 17500cc engine. So producing an Spider convertible immediately raises the weight issue in a more dramatic way when the car’s abilities are so dependent on it low weight, but it seems the Alfa Romeo 4C Spider – previewed as a production car with a concept at Geneva today – has managed to keep the wight penalties of the convertible 4C down to a minimum. Thanks to a canvas roof and carbon fibre rollover bars, the weight penalty for the Spider is only about 60kg (around a 7 per cent gain) which shouldn’t hurt performance too much.

Breckland Beira

Norfolk-based Breckland - part of Hong Kong-based multi-national, Riche Holdings - will display a new hand-built, two-seat Beira roadster at the forthcoming London Motorexpo. Based GM's Kappa platform, the Beira features new front and rear body sections made from lightweight composites instead of steel. This not only enabled the creation of a distinctive nose section and pronounced fastback rear, but it also cut down on weight.

White House pushes automakers toward 54.5-mpg target by 2025

The White House is pushing automakers to agree by Wednesday to a corporate average fuel economy target of 54.5 mpg by 2025--a figure 1.7 mpg less than the 56.2 mpg standard it floated earlier this month. The easing of the White House plan stems from a concession to makers of light trucks and SUVs, and particularly larger vehicles in that segment, such as Ford's F-150, sources said. The latest White House proposal, the most definitive of any it has put forth, calls for a 5 percent annual mileage increase for cars from 2017-2025, said industry and congressional officials who asked not to be named because their discussions with the White House are confidential.