In the wake of Hurricane Sandy, the supply of gasoline was greatly disrupted. Many gas stations were unable to pump gas due to a lack of electricity, thus greatly reducing the supply. At the same time demand for gasoline spiked due to the widespread use of generators. Because gas stations were forbidden from raising their prices to meet the increased demand, miles-long lines developed and stations were forced to start limiting the amount of gasoline that individuals could purchase. New Jersey gas stations began to look like Soviet grocery stores.
Had gas stations been allowed to raise their prices to reflect the increased demand for gasoline, only those most in need of gasoline would have purchased gas, while everyone would have economized on their existing supply. But because prices remained lower than they should have been, no one sought to conserve gas.