4 reasons gas could drop to $2 per gallon or less

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Drivers could soon see big dips in gas prices across the United States, according to oil industry analysts - as low as $2 or less.

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The expected drop in gas prices is due to the convergence of several factors:

• Iran's oil: Following Tuesday's historic nuclear agreement, Iran's oil will be allowed to flow into countries where it was previously blocked due to sanctions.
• Iranian production will increase: Even more oil will flow from Iran next year, as Iran upgrades its infrastructure to meet new demand.
• Supply is up: Iran's oil will add to what is already considered a glut of oil on the world market.
• Demand is down: Blame it on economic problems in Europe and China, is also putting downward pressure on gas prices.

Gas prices vary widely, of course. While the national average is $2.78 a gallon, the average in Los Angeles is 4.20 a gallon — a big jump from last week, when it was $3.55. The Southern California market is quirky, analysts say.