Narrator: Clay models can also be useful for aerodynamic testing. In the wind tunnels, where engineers evaluate a car's drag, or how easily it passes through the air around it, they're the perfect ...

While the brand of clay used by @uamaika might be difficult to find in the U.S., you can get a 2.2-lb pack of DAS Air-Hardening Modeling Clay at Michael's craft stores for $11.99. Other creators ...