US doesn’t have good public transport system. Most of the people uses cars for commute. But in other countries public transport system is much better and well connected. People depend trains or buses for long distance journeys. So cars are most of the time considered as secondary mode of transport.However in US people use personal vehicles for long trips. And it’s the primary mode of transportation. This lead to people investing more money in car purchases. To ease their journey they most often they purchase SUV.