Porsche 356 Horn Button on 2040-parts.com

One Lap of the Web: Jay Leno does the T-REX, Porsche 912 restoration and cars with swimming pools

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. -- Watch as Jay Leno explores the 2013 Campagna Motors T-REX, a three-wheel, street-legal motorcycle that is insanely fast, especially since one of the powertrain options is a six-cylinder BMW engine and the thing weighs practically nothing.

Tata Prima (w/ Gallery)

Pininfarina didn't show a new car at this year's Geneva Motor Show, but there was a surprise new model on the Tata stand adorned with the famed Carrozzeria's signature. Called the Tata Prima (meaning 'first' in Italian), the luxury sedan concept is the first official project of the Tata-Pininfarina cooperation. Based on the platform of the Tata Indigo - the first Indian sedan - the Prima is an indication of how future Tata sedans could look.

Chevrolet Volt fire probe is closed, NHTSA says

U.S. safety regulators said Friday that they've closed an eight-week investigation into the Chevrolet Volt, concluding that the plug-in hybrid's battery doesn't pose a significant fire risk following a crash. In a statement, the National Highway Traffic Safety Administration said it "does not believe that Chevy Volts or other electric vehicles pose a greater risk of fire than gasoline-powered vehicles." The agency said that modifications intended to reinforce the Volt's 435-pound lithium-ion battery pack that General Motors announced on Jan.