Silly Putty has an interesting property. It's soft when you squeeze it slowly, but rock hard if you hit it with a hammer. Someone came up with the good idea of making speed bumps (or "sleeping policemen," as they cleverly call them in the UK) out of a Silly Putty like substance. That way, slow drivers get a smooth ride, but the faster you go, the more the bump punishes you. It would be fun to design the speed bump in such a way that it rips the undercarriage out of any car going twice the speed limit.
Why speed bumps made from Silly Putty are a good idea
The intelligent Speed bump by Badennova.avi
The intelligent Speed bump by Badennova.avi Watch this video on YouTube. Silly Putty has an interesting property. It's soft when you squeeze it slowly, but rock hard if you hit…