1969-73 Opel GT: GM's International Sports Car - Old Motors
1970 Opel GT – The European "Baby Corvette"
Opel AG | Definition, History, & Facts | Britannica
OPEL GT 1969-opel-gt-for-sale Used - the parking
52K Mile Survivor: 1975 Opel Manta | Barn Finds
1995 Opel Calibra Up For Sale In The U.S.
Premiere of the Opel Astra Electric: The range is complete - electrive.com
Official: Opel Insignia Heading to the USA as the Buick Regal | Carscoops
GM taps Opel for future Buicks | Automotive News Europe
Could Opel Be Returning to the U.S. Automotive Market Soon? - The News Wheel
Vauxhall / Opel can't sell to the U.S.
Opel Kadett - Wikipedia
Here Are All the Opel Models That Have Recently Been Rebadged for the U.S. - Autotrader
Restomod of the week: Retropower's Opel GT | Top Gear
Collectible Classic: 1968-1973 Opel GT
1969: Buick's Opel Kadett is the Social Mini-Brute
Opel Astra Spotted Testing On American Roads | Carscoops
Rebadged Opel Astra coming to the USA in 2007 as a Saturn Ion | Carscoops
Opel Astra - Wikipedia
Here's Why Opel Adam Isn't Coming To America | GM Authority
Looking back at sixty years of Opels that can't be kept from American shores | Hemmings
Is the Opel Astra GTC coming to North America as a Buick? | Car News | Auto123
Why doesn't Opel sell cars in U.S? - Quora
Here Are All the Opel Models That Have Recently Been Rebadged for the U.S. - Autotrader
Opel For Sale - Carsforsale.com®
