I live in the Netherlands which is a very densely populated country, and anywhere outside the city center or early/late on the day, the busses go every 30 minutes or hourly. At night there are barely any options, esp. between 2 and 6 AM.
This is the idea I was responding to. I think cars are mostly practical in suburbs and rural areas (I live in a city and basically only bike and walk), mass transit isn't the best solution for all personal transit.