Why would there be a shortage of limousines in Denver for the Democrat Convention?

All these people pushing global warming like to tell the rest of us what to do but fly the country in private jets, live in homes that use as much energy as 100 average homes and drive around in fleets of suvs. Global warming is a scam to make a few politicians rich. The majority of meteorologists don't buy into it. If Al Gore and other really bought into it dont you think they would practice what they preach? They dont