"Gasoline (or any petroleum fuel) is mostly carbon that when burned releases energy in the form of heat. This heat energy makes the engine run and allows it to do work.
The bad part of this process is that the carbon when burned is converted into Carbon Dioxide (CO2). Imagine that a gallon of gasoline weighs between 5.93 to 6.42 lbs (depending on type, temperature, blend and other factors) and as it is burned most of it is converted into CO2 weighing between 5 and 6 lbs per gallon.
If this CO2 was a visible solid, you would have to constantly plow the roads as it would build up like snow in a blizzard. But as it is an invisible gas that floats away, nobody pays any attention to it"
*BOOM* it explodes haha
gasoline doesn't burn, gasoline vapor is what burns.
and uh, it burns...
what exactly is your quesiotn?