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2009’s 10 most fuel-efficient cars in America: The AutoWeek list

Toyota Prius Hybrid 46 mpg combined Base price: $22,720 Our take: The perennial mpg all-star takes the crown again for 2009. Honda Civic Hybrid 42 mpg combined Base price: $24,320 Our take: Another top contender in reliability and fuel economy, the Honda Civic Hybrid is a smart choice. Smart Fortwo Coupe 36 mpg combined Base price: $12,635 Our take: This funky coupe is the least expensive on our list, proving you can be green without spending it.

Pocketsquare to premiere Panasonic's driver-focussed HMI interior concept at NAIAS

Erstwhile GM interior design chief David Lyon, alongside former GM engineer Nina Mital and ex-Ford designer Gary Braddock – the three members of new Michigan-based design consultancy Pocketsquare – will have the first fruits of their new venture displayed at the NAIAS in Detroit in the form of Panasonic's advanced interior design concept. The interior makes use of Panasonic's new range of head-up displays and smart clusters to reduce driver distraction in advance of the latest proposed NHTSA legislation. The system is said to exceed these measures by as much as 35 per cent.

Ultra-rare Steyr Puch 500 goes to auction

£18,000 might seem like a lot of money for a car based on the original Fiat 500, but this particular Steyr Puch example is one of just 33 ever built. Austrian firm Steyr Puch entered into an agreement with Fiat in 1954 after production was halted during World War II, and began production of the 500 under licence. Only 33 right-hand drive examples were ever produced, and of those only two survive; this example and one in the Steyr Puch museum in Austria.