Can run propane under a carport?

One cup, not a gallon, one cup of gasoline equals one stick of dynamite! I have heard that if gasoline were "discovered" today it would immediately be banned for consumers, perhaps the Military would be allowed to have it! As far as natural gas/propane I think that goes back about 100 years! Most homes were heated by coal or oil fired furnaces, you had coal or wood fired stoves, and heated your hot water using the kitchen stove! Natural gas is normally colorless and orderless, so early attempts to change the way you heat your homes and water, as well as cook were met with opposition by the coal and oil providers! Laws were soon passed to put the smell in gas so you could detect a leak, but oil and coal companies spread rumors about how unsafe gas was in an effort to keep their profitable business! Fast forward we take gas in our homes for granted, but the rumors and falsehoods spread by those companies continue. "Safety" laws also lag! In the past 10 years, I have seen on TV and read about many instances where a truck delivering gasoline or heating oil has been in an accident, and a bridge or overpass had to be rebuilt because of the heat from the ensuing fire! Perhaps someone on here can correct me, but I do not recall, ever hearing about an accident involving an RV that took out a freeway because of the propane tanks it was carrying! There was a fire and explosion at a propane company in FLA, where a leaking fixture and the ignition from a trucks engine destroyed the entire yard, but no one was killed, and the ensuing fire was contained in the companies lot! In my opinion gasoline is a much bigger threat than propane!