Fast Money talks gas tax

Time for a floor on energy prices?

Dylan Ratigan, the host of CNBC's Fast Money, and contributor on other CNBC shows, brought up a gas tax twice today on Fast Money. The first time was in an interview with Dow Chemical CEO Andrew Liveris. Liveris claimed that a bottom on energy prices is much needed to maintain investment in alternative energies. And, if a gas tax was the best way to ensure that happening, Liveris would be a supporter.

Then, on Fast Money, the gang started talking about alternative energy investments, and the crew also doesn't believe that alternative energies are a great investment when gas prices are low. The idea of expensive plug-in hybrids, for instance, just doesn't make much sense when gas prices are cheap, Jeff Macke joked.

Is it time for a gas tax?