Traffic in the US is relaxed. Speed limits are low, people don’t clip your bumper, there are many wide trafficlanes, and people accelerate slowly. (That last one is probably because most American cars are, despite their 4.8 liter V8 engine in the average ford or chevy, not very fast.) The fact that you only have to drive for one block to get your driver’s license on the age of 16 is not really an issue here: traffic isn’t that difficult.
American drivers might not be the best drivers, but they are relaxed drivers. So, what would be more fun that racing around with 11 Dutchies? On the go-kart track, of course!