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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.

Renault buys Caterham out of the joint Alpine sports car venture

Renault buys Caterham out of the joint Alpine sports car venture It’s more than eighteen months since Renault and Caterham joined forces to create a new breed of sports cars around the Alpine brand. Renault say the arrangement is a mutual one and officially brings to an end the joint venture, and that the business will be renamed Société des Automobiles Alpine this month, although Renault aren’t excluding further ventures with Caterham in the future. The split means that the Alpine project will now be a purely Renault one, and Renault are planning to get their Alpine to market by 2016.

Opel/Vauxhall Adam Rocks previews crossover, cabrio

Opel/Vauxhall has previewed its Adam Rocks 'concept' ahead of its world debut at next month's Geneva motor show. This mini-crossover is taller and wider than the production Adam thanks to a suspension raised by 15mm with a 20mm wider stance. Its fabric sunroof suggests it will compete with the Fiat 500C and the new Citroen DS3 Cabrio.  The sketches show unpainted plastic bumpers and extended wheelarches along with underbody protection, emphasizing its rugged appearance apparently inspired by "parkour athletes".