New York (AFP) – Large automakers have cut back production at several US and Canadian plants due to trucker-led protests over Covid rules that have blocked a key bridge between the two countries, the carmakers said Thursday. Ford is running its Canadian plants in Oakville and Windsor at “reduced capacity” due to the blockade of the Ambassador Bridge that links Windsor and the US city of Detroit, according to a Ford spokesman. Stellantis said all its North American plants were running Thursday morning, “but a number of US and Canadian plants cut short second shifts Wednesday night due to parts …