This is kinda cool. An Australian company is developing a large balloon that can lift and transport up to 150 tons, which is a lot more than the most powerful helicopters. The saucer-shaped Skylifter would be slower than helicopters and airplanes, but comparable to land vehicles, at a speed of about 50 mph. (Depending, no doubt on winds.)
One use envisioned for the Skylifter is to transport disaster relief supplies or even whole hospitals to otherwise inaccessible areas. Their artist's-conception pictures show one with Red Cross logos.