American Chrysler Corporation cars, including some Dodge models, were assembled from CKD kits at various locations in Europe until the 1970s, including Kew (1920s-30s), Antwerp (1926–1958), and Rotterdam (1958–1970), but sales volumes were low as even 'compact' American cars like the Dodge Dart were enormous gas-guzzlers by European standards. However, protectionist policies in some countries encouraged small local manufacturers to license-build CKD models, including AMAG in Switzerland (building Chryslers and Dodges 1948–1972) and Barreiros in Spain (building Dodge Darts from 1965 as the Barreiros Dart). By 1969 Chrysler had acquired full control of Barreiros, and Darts were being exported to other European countries under the Dodge name (precipitating closure of the Rotterdam plant). From 1970 the Spanish-built Dart was replaced by the Barreiros/Dodge 3700 which remained in production until 1977. The Dodge cars were a relatively small part of the Madrid factory's output, which was dominated by smaller Simca-designed cars and Barreiros-designed heavy-duty trucks. From 1972 such trucks were sold as the Dodge 300 (though unrelated to the earlier British 300 series), which was available as 4×2, 6×4, 8×2, and 8×4 rigids, as well as 4×2 semi-trailer tractors.