We don't need to tell anyone that there's no shortage of idiots in the world. Think about the sort of person whose attention is so absorbed by their smartphone that they're prone to walking through glass doors or falling into sinkholes. Now imagine that person getting into a car and driving around. Terrifying, right? Millions of idiots drive every single day and it's totally normal. Thanks to all the extra-cautious drivers in the world, there's plenty of mind-boggling dash cam footage out there