The same way several makers had Deluxe's at the same time. I guess they weren't too sensitive back then. Cheverolet was first in 1935.
Yeah, back then branding didn't matter nearly so much as making a decent product. Now they're only interested in having you buy something with their logo on it and they don't give a damn if it runs or looks exactly like what everyone else is selling. As long as they can sell as many as they think they should, and sue anybody who might impact that, they're happy.
Everything is labeled "GT" anymore. But I dont see anything "Grand Touring" about the junk they toss these labels on. Remember when GT used to actually mean something other then a spoiler and maybe a different bumper? Used to mean sporty suspension, better engines, a sportier look etc.
