Comparedwithother OECD countries excluding the USA, the ratio showed a value of 0.366
cars per inhabitant, or about 366 cars per 1000 inhabitants; whereas the USA showed a higher ratio value of about 0.561, or about 561 cars per 1000 inhabitants (Vasconcellos, 2001). These values refer to car ownership in 1993, but are certainly higher today.