[Stuart]

Reminds me of something I heard about Nasa..

When looking for something to write in space (as Biros apparently don't work), Nasa spent billions of dollars developing a pen that would work in space (and eventually developed the roller ball).

When faced with the same problem, the Russians (the Soviets then) used a pencil.

Actually, regarding the cones, Johnny Vaughn had an interesting point. He said they'd be good for students. His reasoning was that students (when drunk) like to nick traffic cones. If the cones could move, the students would have to "hunt" the cone.