I propose that extraterrestrial lizards (hereinafter called "aliens") are talking to us through the tires on our cars. These aliens lack vocal cords, so in order to communicate with us through sound, they shape shifted into highway construction workers and cut grooves into sections of highways so that our tires would produce a particular sound. When you go different speeds, your tires make different pitch sounds. The aliens cut the grooves into different patterns with different gaps between the grooves. Both speed and groove arrangement affects the words the aliens say to us through our tires. Wake up and LISTEN!