Looking back at sixty years of Opels that can't be kept from American shores | Hemmings
Magna Says GM Agreement Forbids Sale of Opel Cars in the U.S. and China | Carscoops
Holden und Buick: Opel-Modelle in Amerika und Australien
Here Are All the Opel Models That Have Recently Been Rebadged for the U.S. - Autotrader
1969 Opel GT Coupe Is Junkyard Treasure
Opel Astra Spotted Testing On American Roads | Carscoops
Cute and tough, the Buick-Opels were often driven into the ground | Hemmings
Why don't they change Vauxhall to Opel as it would be cheaper to manufacture, advertise etc? - Quora
Opel to Return to America?
Here Are All the Opel Models That Have Recently Been Rebadged for the U.S. - Autotrader
Opel Grandland X SUV revealed - Drive
Opel: They were in the U.S. a long time, and you may not have known it
Opel Astra - Wikipedia
All Opel Models: List of Opel Cars & Vehicles
Could Opel Be Returning to the U.S. Automotive Market Soon? - The News Wheel
Opel Cascada - Wikipedia
1969-73 Opel GT: GM's International Sports Car - Old Motors
OPEL Models, Photos, Specs & Engines (1968-Present) - autoevolution
Opel Car History: Generation, Features & More | dubizzle
1970–1975 Buick Opel Manta: Germany to the Rescue! | Autopolis
Full List of Car Brands with “O”. AUTOMOTIVE 2 days ago 19 0 | by Albert spencer | Medium
Opel Insignia - Wikipedia
Why don't they change Vauxhall to Opel as it would be cheaper to manufacture, advertise etc? - Quora
Opel - Wikipedia
All OPEL Insignia Models by Year (2008-Present) - Specs, Pictures & History - autoevolution
Opel GT - Wikipedia
