In reference to your question about gasoline...it can be dangerous to haul around (after all, it is a flammable product in the form which we use it). But in some ways it's much easier to deal with gasoline than, say, oil. Much easier to pump into and out of ocean going vessels transporting the fuel. And we barge or rail ship lots of gasoline around because pipelines to large bulk storage facilites don't go "everywhere." Besides, that gasoline in your vehicle's tank probably came to the gas station in one of the many 8,000 gallon tanker trucks that routinely distribute more than 9.3 million barrels of gasoline per day (that's about 49,000 roundtrip cycles for these trucks every day).

Notably, gasoline can only burn if the vapor concentration is between the upper and lower explosive limit (sometimes referred to as the flammable limit). For gasoline, that's between 14,000 ppm and 76,000 ppm, if memory serves. Outside of those limits and the vapor cannot burn (and precautions are taken to keep vapor concentrations outside the flammable range). Other precautions are taken during liquid transfer to prevent static buildup and discharge that might accidentally ignite a flammable mixture.