I *absolutely* would support it if the Congress would like to mandate a flex-fuel option and I am planning on sending a fax to the presidential candidates mentioning my concern. I was listening live to that Space Show program and you heard Dr. L ask a few of my questions on air (I'm "Mel from GA" nice to meet you). Off air, we continued to talk about it.
What the other people who have already answered this question seem to be ignoring or perhaps don't understand the economics behind all of this. Now I'm a scientist of sorts (tech transfer specialist by day, astrosociologist by night), and not an economist by any stretch of the imagination, but the implications of continuing to use foreign oil is quite clear and disturbing and very well could cause tremendous problems in our economy.
One answer mentioned they didn't want options to be taken away. Hello! Its called an option! Mandating a flex-fuel option on cars does *not* mean you *have* to use the flex fuel. This flex fuel option should be as common as air-conditioning (how many cars do you know that don't have AC?) With a flex fuel capable engine, if you want to use normal gas, that's cool. You have that option on your car to do either one, however someone should not prevent me from putting flex fuel completely out of my reach. And forgive me if I am wrong, but some of the answers that have already been given show an ignorance of science, economics, as well as the current technology, issues, and costs that currently surround alternative fuels for the transportation industry. $100 more per month? No... $100 more *total* from what I have seen. Its pennies a month more.
On to a more patriotic message, which if you know me (which you don't) is not something I usually do, but not at least considering ways to decrease the dependence on foreign oil (and increasing the availability of flex fuels seem to be the best way in my opinion) by whatever means necessary is really fundamentally unamerican. The Middle East doesn't want us on flex fuel because, of course, they are making some ungodly amount of money on us per barrel of oil. Over 70% of the oil we purchase goes where? That's right! Transportation! Imagine just a 10% or 30% decrease in oil. Several foreign car manufacturers are lobbying Congress to prevent mandated things like flex fuel. Why? Because the American manufacturers are ahead in this issue and they want time to develop their own R&D.
People really have to ask themselves, do they want to continue to give their money to what is effectively a foreign monopoly? Or do they want to keep much of that money here in the US? Oil is going to run out sooner or later and flex fuels are cheaper, less polluting, and something we have much more access to than gasoline.