You might go somewhere by bus every day but I bet you din't notice some of the important details. Like why do buses have bigger steering wheels than cars? Why don't buses have seatbelts? And is there a reason for those weird patterns on the seats of many buses? Every item surrounding you on a daily basis has some hidden purpose. Let's explore hidden functions of these object we see or use every day. If we know all of their features our lives might get just a little easier...