But Americans do drive everywhere, and that's 48% of all transport emissions (just cars, not even counting trucks, with that it's more like 73% for all road transport). So yeah. Nobody gives a fuck.
It's very appropriate to pull out "X is only Y% of emissions" when there are vastly larger targets we should be concerning ourselves with. Admitting where the problem actually lies doesn't absolve individuals of all responsibly or prevent individuals from making smarter choices. Very few people need a truck or SUV and we'd all be better off with fewer of them on the road, but it's that's the last thing we should be worried about when it comes to meaningfully addressing climate change.
Oh, so we just have to take down those evil corporations and then everything will be solved?
That is how it sounds like. Easy solution. Except - who will then produce and deliver the cheap food and products for the poor unresponsible individuals to consume?