If the government was concerned about the welfare of gasoline suppliers, rather than demanders as is the case with a ceiling, then perhaps a price floor might be used in this market. By placing a floor of $2.00 per gallon on this good, we see the following.

The price floor is set above the equilibrium price, which forces the market price to be $2 per gallon, rather than $1.45. Rather than a shortage, we get a surplus as suppliers provide greater quantities and demanders purchase lesser quantities. The price floor leads directly to a surplus and, like the shortage, is likely to have certain indirect effects as well.