hot air balloons, etc.
Vehicles such as airplanes and cars rely on oxygen from the air to burn their fuel. Rockets take the oxygen with them.
Because they had no air vehicles or automobiles.
Older vehicles took R-12 freon and the newer vehicles take R134a freon.......
The first hot air balloon to take people up was in 1783 in Paris, France.
Hybrid Air Vehicles was created in 2007.
Some machines or vehicles that float on air include hovercraft, air cushion vehicles (ACVs), and airships or blimps. These vehicles use the principles of air pressure to generate lift and achieve buoyancy.
Just, simply, Lighter than Air Vehicles are lighter than air, so that makes them fly, and Heavier than air vehicles are heavier than air, but they use airfoils on the wings to fly.
No. Florida wouldn't pass any such law unless it was passed as a part of the Federal Motor Carrier Safety Regulations first. As it, the FMSCR has no requirement for commercial vehicles to have air conditioning.
Planes.
on 1999 on nickelodeon
-- blimp -- Zeppelin -- dirigible -- hot-air balloon
Lighter than air vehicles are vehicles which fly by reducing their overall weight to zero or near zero. This is done by using a large envelope or balloon filled with a lighter-than-air gas such as helium or hot air to lift the vehicle.