Amazing how many people out there think gasoline is the same as lighter fluid. I learned that lesson the hard way as well when I was around 12 I poured what I thought was a little bit of gasoline on a tree stump and threw a match on it and WHOOOMP like magic I had a new very short hairstyle, no eyebrows and a shrunken tee shirt!!
Uncontained gasoline generates lots of flammable vapors very quickly and spreads quickly. You can't see it and a lot of people don't associate the fact that if you can smell it, it's already formed a potentially explosive cloud. That's why people shouldn't smoke while fueling their vehicles or even get in and out of their vehicle and not grounding themselves before removing the nozzle. it's not the gasoline that will get you, but the volatile vapors they generate.
It's very interesting to watch a pool of gasoline burning. All the flame is above the gasoline itself. It's not the gasoline that's burning, It's the vapors that it constantly puts out.