I see enough idiots driving on the roads around here in the Washington, DC area -- no need to look at videos of idiots in other places! That said, yes, it is truly concerning that at times it seems that people are too casual (careless!) and that often they really do not seem to be paying full attention when they are at the wheel of a very powerful vehicle which can easily kill or injure someone else, or do significant damage to another vehicle.
The county where I live has been adding bicycle lanes here-and-there in an effort to encourage and support bicycling as opposed to someone always driving a car somewhere, but frankly, I wouldn't feel safe riding a bike on one of those, as we just have too many nutty, irresponsible drivers of cars in this area. Years ago I did love bicycling to work when for a while I lived within reasonable biking distance of my workplace and had a nice bike path (part of a county-wide walking trail) to use so that I wasn't on any roads with vehicular traffic for very long, but I sure as heck wouldn't attempt to do even that these days.