4585- 02 Yamaha Xvs1100 V Star Classic Oem Rectifier Voltage Regulator on 2040-parts.com

The 500-hp club: The room is getting crowded

At a time when fuel economy counts for just about everything, there's still a horsepower war raging in the United States. The number of fire-breathing wedge-shaped supercars and hot sedans and coupes that can pump out 500 hp or better has nearly doubled in the past five years to more than 70. A decade ago there were just two members of the 500 hp club in the United States: the Ferrari 575M and Lamborghini Murcielago.

One Lap of the Web: Elon Musk's Hyperloop, Greenwich Concours and a Model T

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. The 2013 Porsche Rennsport Australia went off over Memorial Day weekend at Sydney Motorsports Park and motorsportretro.com has full gallery of pictures.

Maserati GranTurismo convertible price set

Need a reason to think spring? Try this: Deliveries of the four-seat Maserati GranTurismo convertible begin this spring and the car carries a base sticker price of $139,700. The figure includes the base price of the car, $135,800; dealer prep, $300; shipping charges, $1,500, and gas-guzzler tax, $2,100.