I am curious, how much time did it take to make those 18miles (28km?) by car? I have just checked in my city, that has really nice public transportation (Tallinn), and to cross essentially the whole city (~20km, a route that nobody does, so probably not very well connected) on Monday at 9am it takes 59m by public transport (2 buses) and 40m by car (it takes 30m generally, but traffic). 2-3h or 2/3 times that to do 50% more distance looks like public transportation is not that good, did you mean "good for US standards"?