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

One Lap of the Web: Porsche 959s, the Alfa Romeo 4C and the Mercedes-Benz A45 AMG vs. the BMW M135i

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. -- When initially produced to satisfy FIA homologation requirements in 1986, the Porsche 959 was the world's fastest street-legal production car.

Mercedes-Benz backs Smart with ads, deals

Smart USA will launch a TV, print and digital marketing campaign by year end to jump-start the struggling microcar brand that Mercedes-Benz USA took over on July 1. "People are not avoiding the brand or the product, but there is a great majority of people who are not aware of the brand," said Tracey Matura, the new general manager of Smart USA. Mercedes is also offering lease and finance deals for the Smart brand through its Mercedes-Benz Financial Services captive finance arm.

Ken Block rolls out Ford Fiesta hybrid race car

Driver and rally racer Ken Block introduced his latest vehicular weapon on Monday. The Hybrid Function Hoon Vehicle (HFHV) is not a hybrid in the traditional gas/electric sense, but instead is able to transform itself to compete in various race disciplines. The HFHV Fiesta will compete in three distinct disciplines--stage rally, rallycross and gymkhana events.