All the races for the American Le Mans Series should be on every green gearhead's calender. After all, it has quickly become the greenest “conventional” racing series in America, and possibly even the world. They've done this by introducing new fuels and features into the series that promote innovation and fuel efficiency. In racing. You just don't see that very often (NASCAR, I'm looking at you).
The latest entry into the ALMS series of alternative fuels was biobutanol, to be run by Dyson Racing. Proving the power of their special blend, Dyson just took their first checkered flag at this weekend's Mid-Ohio Sport Challenge.