If you pay attention when you go to fill up your tank you might have noticed you're paying significantly different prices from week to week. And in fact, some experts say you might see a price spike of 50 cents a gallon in the next week or so.

Now, California is always an outlier when it comes to gas prices. Cross the state border and you will most assuredly pay less, but there are also now allegations of price manipulation on the part of oil refiners.

Tiffany Hsu joins Tess Vigeland to talk about why gas prices in California are such a mess. She recently wrote about this topic for the LA Times.

If you'd like to hear the entire interview, click on the audio embedded in the link above.