Here are two advertisements for those little cars that run for about 25 milliseconds after you push them. The first boasts "Super 4WD Friction" while the second adds the word "Power"...research is going on now as to what "Friction Power" actually is? Does it involve static electricity? Will we ever solve this mystery?

Also notice the second ad: "Vehicles that can almost climb anything!" Quite a boast seeing that this means that there is nothing that they actually can climb.