 Paid for at first with an excise tax on gasoline, the bureau could claim some important accomplishments, like the 1951 opening of the 200 km Santa Fe-Rosario expressway, Latin America's first.Argentina is home to around 9.2 million registered cars, trucks and buses; on a per capita basis, it has long had Latin America's widest accessibility to motor vehicles.Left-lane drivers until 1945, Argentine motorists have since been driving on the right-hand side.