I was trying to answer the same question and i came up with Galant. Its a model but still a car.
:-)
HOW ABOUT GMC
Mercedes Bens Geländewagen aka the G-Wagen or the AMC Gremlin are a couple to start as far as brand go there is GMC also known as the General Motors Coorperation
Ghia, and Ginetta are long gone. There is a race manufactuer called Gillet, and Maserati makes the Grand Sport.
gmc
golf
golf
the Mercedes G- class
General motors
gwm , gmc , gonow, a gizmo, gremlin, gran torino.
well there is a go cart
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Gummy Bears
Geranium
gothic
General Motors Corporation
Gio, Gallant, Grand Prix
Honda.
Kia