As lovers of science and innovation, few things delight us more than tinkering around with spare parts. In our 138 years of publication, we've showcased scores of similar-minded inventors who could turn scrap heaps into motorcycles, robots, and four-wheelers. These people aren't just hobbyists, they're visionaries capable of imagining great machinery from what others had deemed broken and useless.
While people have created a great number of things from scratch, cars stand out as the prime project for professional engineers and bored tinkerers alike. We don't blame them - who wouldn't enjoy taking their invention for a celebratory spin upon completion? Join us as we take a look at some of the more curious vehicles assembled in garages over the past hundred years, and decide for yourself whether they're clever or the work of a crackpot.
Click to launch the photo gallery.