It seems that according to the video on this page on the Red Line website, water is better as a coolant than the 50/50 antifreeze/water mix that is normally used. They go on to say that by adding Red Line Water Wetter to water, it creates an even better cooling concoction. Would this test work in a normal car and if so, why have these coolant-making companies been able to sell their products for a comparatively much greater price than water? If this is an incredibly dumb question, please forgive me.