Watching the BBC's 10 O'Clock News last night, they had a report on the impact that biofuels (particularly in the US) were having on world food prices. It featured footage of IndyCars on a road course (think it was Infineon) and talked about their move to ethanol.

It was the first time IndyCar's had a mention on the BBC News over here since probably the mid 90's, although the report was quite negative about the use of biofuels, especially from corn, which it claims is very inefficient when compared to ethanol from sugar cane, like the Brazilians produce.

I'll post a link to it if I find it.