Why do I keep parking by places that smell like gasoline?
That reminds me that I once smelled gasoline as I turned onto the highway to go home from work. The smell kept getting stronger and stronger, until I saw a wet pavement and then saw a car leaking large amounts of gasoline in front of me. I got on the left side of that car and I could clearly see a serious leak from somewhere in front of the right rear wheel. I finally got the driver's attention and told him that his car was leaking gasoline.
I'd bet that the leak was from a loose fuel filter connection, since it was a Ford product and a lot of those have the fuel filter in that location. He'd probably recently had it replaced and whomever did it reused the old fuel line clips (which is a no-no).
What blew my mind was that this guy had been driving on this highway for at least 5 miles and not a single person besides me informed him of this potentially explosive situation.
What if he'd been sitting at a light and someone tossed a cigarette out the window?