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

Tesla Model S outsells luxury competition

As if Tesla needed any more good news this month, first-quarter sales are in and the electric Model S outsold the Mercedes S-class, Audi A8 and BMW 7-series, according to “CNN Money.” In the first three months of 2013, Tesla sold 4,750 sedans while Mercedes sold 3,077 of the S-class, BMW sold 2,338 of the 7-series and Audi sent 1,462 A8s out of the dealership. The Model S does have its sticker price going for it. The base model can be had for $69,900 -- possibly less with tax incentives -- while the cheapest S-class goes for $93,255, the 7-series for $74,525 and the A8 for $73,095.

Shelby raffles off last 50th-anniversary Cobra

Shelby is celebrating its 50th anniversary in style, first at the Detroit auto show with a few black-and-gold Shelby Mustangs, and now at the Barrett-Jackson auction in Arizona with the last example of the 50th-anniversary Shelby Cobra. The car won't be sold to the highest bidder though; it will be raffled. Tickets cost $25 apiece or five for $100.

New app from Pirelli tracks biker's performance

Pirelli has launched an iPhone app for motorcyclists that tracks speed, lean angle, road routes and racetrack lap times. The results can be shared via social media. The app, named Diablo Super Biker, uses the phone's GPS and g meter to calculate and record the info.