I have technical / practical concerns with this: is it visible by outside inspection when in place? How can it be removed by the woman safely, if no rape occurs? Can the same method be used by a rapist? What kind of damage would it do if the rapist tried insertion of a digit first? If those devices became popular, what would keep potential rapist from keeping an inconspicuous item of similar size to a penis around (carrot, hot dog) to spring a potential trap?

"[Plastic bags] take up much less space in landfills [than paper bags]."
How can you take up less space than 0? Paper bags rot and turn into compost, which is not something plastic is known for.
His whole list reads like a really, really stupid person refuting ecological talking points: polar ice melting? It's not record-breaking this year, so we're safe for all eternity! Poison in your food? Well, if you didn't consume so much you wouldn't get ill! He has never encountered a worm hole in person, so we can stop worrying about climate change, poisonous chemicals and climate change (his _actual_ argument)! Laugh, it's funny!

If you like this, you might want to check out something similar: the German Rhönrad. See http://www.youtube.com/results?search_query=rh%C3%B6nrad&search=Search for some examples...