Maybe, maybe not. Over here in the UK our petrol (US:gas) prices are currently roughly around the 7USD/USgallon mark. Yet we're actually seeing an increase in SUV use in urban/suburban environments.
One of the biggest reasons? Celebrities here are driving SUVs, so they're seen as "cool". Which means that everyone is buying them.
I think the solution is to get the celebrities to drive economic vehicles economically of their own accord. Good luck with that one, most of them are still in the "my dick size is related to my car size" school of... I use the term loosely "thought"
Is our driving better than that in the US? Possibly somewhat, but it's not massively better IMO.