Hows it go?
GM own Opel & Opel own Vauxhall...
( thirdman Ia! Ia! R'lyeh Cthulhu ftagn! Ia! Ia! Mglui nafl, Mon 10 Feb 2003, 16:01, archived)

GM owns
both, and Holden in Australia, who markt the car under a different name to Vectra, and who fit kick-arse engines in them.

And they even get sold in the states as base-model Caddilacs!
( JustHere, Mon 10 Feb 2003, 16:12, archived)