> Converting a large gallons-to-the-mile ICE to an emissions-free electric drive train shows a willingness to cannibalize a previously successful marketing brand

The marketing brand for Hummers is girth and power, male sexual machismo in car form, and that isn't changing at all. Nobody evaluates their proxy phallus in terms of fuel consumption. They do it in terms of manly things like horsepower, towing capacity, and taking up a lot of space so that the whole world notices you. Electric vehicle marketing has been all over the "MOAR POWAR!" angle from the very beginning. There's zero reason for a car to accelerate to 60MPH in 3 seconds, but here we are with every electric tank advertising that it flies like a bullet.