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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.

Audi A2 concept (2011) first official pictures

The original Audi A2 was ahead of its time – it was small and fuel efficient, but its all-aluminium construction made it costly before the world was ready to pay a premium for a small car. But now it’s back, and to preview the new A2 being launched in 2015, Audi is unveiling this A2 concept car at the 2011 Frankfurt motor show next week. What is the new Audi A2?

Sergio Marchionne’s Dodge Challenger to be auctioned for charity

Chrysler CEO Sergio Marchionne will auction his personal 2011 Dodge Challenger SRT8 392 at the Barrett-Jackson auction in Palm Beach, Fla. in April. The Challenger is painted in Pitch black accented with charcoal racing stripes hand-laid by SRT designers, and all proceeds from the sale will benefit the United Way for Southeastern Michigan charity.