Why? Youre missing the point, they have already been globalized, the Ampera is the Ampera everywhere in Europe, advertise the Ampera and if the ad is in Britain, shop out the Opel for Vauxhall. And I think the cost savings would be extremely minimal, and I dont think the minimal cost savings would make up for the loss of sales that would result from changing the name for at least 20 years at best which is not worth the short term loss at a time when GM Europe is losing money, How would American consumers react if Buick was suddenly changed to Opel, sales would plummet.
Daewoo was a tarnished brand that was extremely weak, and Chevy has more cachet than Daewoo could ever have.
Cisco and Linksys were both well known brands, and Cisco would put both of their names on routers for a long time, you cant do that with cars, among other key differences.
And if GM were to do it, now is not the time, it should be done when Opel is a well respected brand and has a high market share in Europe, like maybe around 15%, and when GM is not losing money in Europe so they can handle the short term loss that will result.
