Norton 850 Cc Commando Intake Tract Carburetor Extensions Spacers 32mm on 2040-parts.com

Tomorrow's world: Ford's downsized 1.0-litre Ecoboost

Direct injection petrol and diesel, hybridisation, downsizing, turbocharging, twin-charging the list of efficiency-boosting, fuel saving features being offered in new cars is becoming so long, buying a new one is like revising for exams. Is there room for another? Apparently so, but since there’s no official name for it yet we’ll call it ‘super-downsizing’ or in other words, using a very small engine in a not so small car.

Ironman Stewart retires, sells all

The off-road racing accomplishments of Ivan "Ironman" Stewart might never be matched: 82 major wins in desert racing, 17 of them in the crash-and-bang Mickey Thompson stadium series, three Baja 1000s and others too numerous to squeeze in here over a career that spanned 30 years. The thing that really sets him apart is that, while competitors shared driving duties over the long desert courses, Stewart did the vast majority of them alone, with no relief drivers--just him and the dirty, dusty desert. But even legends want to retire someday.

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.