I saw the same show and you've missed the point. I'm HIV positive and must be careful when it comes to flu's passed on through someone elses "toilet spray". Thousands of people die every year from influenza caused by another person passing it on to them via hand to mouth contact with contaminated objects in the home.

Not just old people. Anyone with a compromised immune system should be using precaution. I read that pregnant woman and children under 5 are also vulnerable. When I go to a hotel I'm very aware of the fact that I don't know who was there before me. Off comes the overcover on the bed and a quick wash down of the sink and counter top is smart travel sense. This couples invention might not be as flashy and obvious as a two seater bike but it's way more important. If the toilet seat makes it to the end they have my vote.