What makes clay models so special, is that they are the one-off original designs. In theory they are the priceless, original works of art and the production cars are the prints.The traditional process of manually refining the design of a car using clay over foam formwork, is still used even today, when CAD has replaced most drafting. Clay designs are often produced directly from computer milling and usually tweaks are fed back into the CAD design

There is a strange beauty to slow motion videos of car crash test dummies and airbag deployment, but these don't compare to the similar, but far more extreme safety measure of a fighter jet ejection. Here are videos of various aspects of their deployment testing and training. Some of these are absolutely mesmerizing.

When I was an architect, it was common for structural engineering books to have this image of two people effortlessly supporting a third to demonstrate the cantilever principal of the famous Forth Rail Bridge outside of Edinburgh. When I was looking for this picture, I noticed that the people were different. It turns out that this iconic image is not unique and here are the three variants I could find, making this the shortest (and one of the more obscure) oobject list to date.

To recreate the General Lee from the TV series the Dukes of Hazard, you need: 12 cans orange spray paint; one 1 sticker; one 1969 Dodge Charger. This is what you get if you just have the sticker and the paint. Vote for the worst.

Suits for hazardous materials are serious business and high tech., but look ridiculous. They come in several varieties: Splash Suit, Gas Suit, Turnout Coat for different levels of contamination. Their look ranges from giant pink translucent condom like outfits, to oversize Tasmanian Devil shaped suits. From the examples in this list, standard training procedures include washing down while standing in a regular inflatable kids paddling pool and basketball dribbling.

The Enigma is one of the most well known devices in the history of gadgets, being responsible for the birth of the computing industry, in attempts to crack it. This has largely overshadowed the plethora of other cryptographic devices, which are often overlooked. Here is a gallery of 20 secret message machines.