400mm Marine Water/ Fuel Level Tank Sensor Gauge 0-190ohm Sender For Car Marine on 2040-parts.com

Ruf Stormster concept (2009): the electric Porsche Cayenne

Ruf might be a tiny German tuner, but it’s just unveiled the first ever electric Cayenne. Called the Stormster it's Ruf's second battery-powered Porsche, uses the same motor as the company's electric 911, weighs close to 2.7 tonnes and hits 62mph in ten seconds. No at all – in fact, earlier this week Ruf took its 676bhp GT2 to 229mph at the Nardo test track in southern Italy.

Ultra-low-mileage Chevrolet Corvair Monza heads to the auction block

We've never really paused to appreciate the subtle good looks of the Chevrolet Corvair, especially the end-of-the-line 1969 Corvair Monza coupe. But this particular car, which will be sold at the upcoming Mecum Houston auction on April 11, will make you stop and take stock. Even if you're Ralph Nader, you can't help but be impressed by its extreme originality: It has just 15 miles on the odometer.

F1: New rules for 2011; 4-pot turbos for 2013

Turbo engines back in F1 in 2013. First turbo F1 - the Renault RS01 - pictured As anyone who keeps even the most casual of eyes on F1 knows, rules and regulations in the sport are there to be changed. And they are, with great frequency, as teams get better and better at exploiting current rules.