I think the US infrastructure leads to a confirmation bias. There probably aren’t that many people who are actually “bad” drivers out there. The majority of people aren’t getting tickets, damaging their car, or hurting people most of the time when they drive. Our culture being so car centric however means that the actually bad drivers don’t have a choice but to be on the road. Bad driving also calls a lot of attention to itself because it’s dangerous. So when you drive you frequently see bad driving when realistically most people are just fine drivers, leading to you thinking more people are bad, and thus you must be better

That and American exceptionalism probably