The four millionth commercial vehicle made by General Motors in Bedfordshire, a Vauxhall Vivaro van, has been delivered to the Automobile Association. General Motors has manufactured commercial vehicles at plants in Luton and Dunstable since 1930, for sale under the Vauxhall, Isuzu, Bedford, Opel Renault, Nissan and Chevrolet brands. The Vivaro is the latest of the line and is a joint venture between General Motors and Renault.