Most places in Europe just don't have the space/luxury to "spread out" like North American cities (which were built much, much later than those in Europe were). There is still a lor of land available for development in North America (specifically the US). Or, the places that have parking and/or large multilane roads were built fairly recently on open land. For parking lots and multilane highways in places Europeans want/need to go, they'd have to tear down what's already there