...update it incrementally. That's the logic, at least, behind Royal Enfield's 2008 motorcycle collection. The flagship is the Bullet 500 Classic (pictured), which has had more or less the same design since 1955, when it was first manufactured in India. (The bike's named after a product the company no longer makes: rifle cartridges.) This year, however, the brand has given it an all-new four-stroke engine from Austrian engineering firm AVL, good for a whopping 70 mpg on the open road. Think of it as a hog Al Gore could love.
$5,095, enfieldmotorcycles.com