Billboard advertisement: "Screw Global Warming. Let's Fly!"

How could I not share this one with you guys? I know that global warming is not universally accepted among scientists or the average Joe, but does that mean we should all just assume there is no problem and go about our daily lives without questioning our actions? Is that what this billboard from Spurt Aviation is trying to suggest, or is supposed to be pure satire? I'm not entirely sure. What do you think, is this funny or just in bad taste?

[Source: Spurt Aviation via Lite Green via Hugg]