Not only a nifty idea for fuel, but a way to deal with our ant overpopulation! As with other biofuels, it may have the downside of increasing the price of formic acid as a foodstuff.
And if you've never tried ants over shoe-string potatoes, you should -- they add a delicious, lemony flavor! Just remember to check your teeth for ant-legs after dinner. :)
Reminds me of a TED talk[0], about how we'll probably have to eat a lot of lower-trophic-level food in the next few decades, as the population of Earth increases -- stuff like crickets, and other insects.
And if you've never tried ants over shoe-string potatoes, you should -- they add a delicious, lemony flavor! Just remember to check your teeth for ant-legs after dinner. :)