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

Tesla Roadster: RHD hits the UK – Tesla Roadster production to end in 2011

Tesla has launched a RHD version of the Tesla Roadster A right hand drive Tesla Roadster is something that should help Tesla shift more cars in the UK – and other RHD markets as well – so it’s welcome news that Tesla has announced you can now order up your Roadster in RHD for £86,950. Tesla has titivated the Roadster a bit for the RHD launch, adding a new sound system and some extra soundproofing. It also looks as if – judging from the picture they sent us – that they thought a picture of the RHD Tesla taken in the rain would make UK buyers feel at home.

London's GPS-based speed-limit trial puts Big Brother's foot on the gas pedal

A fleet of 12 Toyota Priuses in London have been fitted with GPS-linked speed limiters to measure how drivers respond to having their speed controlled by a computer rather than their own feet. For now, the trial is local to London, run by Transport for London, the agency that manages the city's roads, buses, subways and trains. The agency is using its own fleet of Priuses for the test and will add a bus and a taxi later this year.

Underground Racing Lamborghini cracks 250 mph--watch the video here

Earlier this year, we told you about Underground Racing, a shop in Charlotte, N.C., that makes a business out of upgrading Lamborghinis with twin turbochargers to boost engine output to more than 1,000 hp. Now, a Lamborghini Gallardo Superleggera upfitted by Underground Racing cracked the 250-mph mark at the Texas Mile event. Car owner Richard Holt made the 250.1-mph run in late March, but video was posted just this week.