Six Italian cities - Rome, Perugia, L'Aquila, Potenza, Modena and Catania - open the European list of cities with the most cars. For example, the Eternal City has 720 cars per thousand residents.
In addition to six Italian cities, the top ten 'most congested megacities' include Malta's Valletta and Gozo, the Dutch Almere and Luxembourg.
According to RIA Novosti, the cities with the fewest cars include Frankfurt am Main (50 cars per thousand residents), Barcelona (70) and Belfast (75).