Comment by ryusage

Yeah, at least in my part of the US, that's very true. The roads do curve a bit of course, but they're straight enough that you drive 55 - 80 mph (88 - 130 kph) for almost the whole trip. And a lot of the time, there are at least two lanes to pick from -- common courtesy is that slower cars stay in the right lane so that faster drivers can pass them.