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

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.

2014 Nissan NV Passenger Van: Here's what it costs

Nissan has just announced pricing for the 2014 NV Cargo Van and NV Passenger Van, which are available at more than 350 Nissan Commercial Vehicle dealers. That's right: In case you haven't noticed, there's a passenger-van version of the NV commercial vans with room for 12 people. So it turns out the Nissan Cube isn't the most boxy passenger offering from the automaker after all.

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.