It was snowing in Orlando when I was there a few weeks ago, at MGM and Magic Kingdom, but it was in the 60 deg. range. I guess man-made doesn't count.
Same method used here. Dodge put a nice snowplow on the front of the Neon (airdam). I just ram into the mountain the town plow leaves at the end of the driveway.
Heck no... the Inconvenient Truth that the Earth has forever gone through cycles of heating and cooling might cool down the hysteria. Can't have that !