Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

GM to sell bifuel Chevrolet and GMC trucks

While gasoline hovers at about four bucks a gallon, natural gas is priced at the equivalent of $1.89 per gallon. Chevrolet and GMC are hoping to take advantage of that disparity by offering bi-fuel heavy-duty pickups for fleet and retail customers beginning on April 19, the day before Earth Day. The bi-fuel option will cost buyers $11,000, on top of the price of the pickups.

Concept Car of the Week: DeTomaso Zonda (1971)

Not satisfied in producing one of the most astonishing sports cars of the ‘60s with the Mangusta, Italian carmaker DeTomaso asserted its ambitions in 1970 by presenting an even more striking sports car, the Pantera, alongside the luxurious Deauville four-door sedan, both powered by the same Ford V8 engine. Those new gorgeous models were the work of Dutch-born Tom Tjaarda, then head of design at Ghia. Despite those amazing cars, the styling house was struggling to make a profit and that same year, Alejandro DeTomaso sold Ghia along with a large chunk of his company to Ford, which was looking for that exotic Italian touch.

Win a Seiko Sportura watch worth £395!

For a decade, Seiko’s Sportura range has acknowledged the link between great timepieces and great cars, with watches inspired by motoring and motorsport. And now you could win one of these fine watches, by answering one simple question: who is the reigning F1 World Champion? Click here to answer the question (it's multiple choice, so it's easy) and enter our competition Like the instrument panel of a sports car, Sportura dials are instantly legible; all have a jet-black background with orange or red hands, and a sapphire crystal with an anti-reflective coating.