Anybody got a read on the likely impact of the new fuel rule?

If I read the new Fastrack properly, the existing fuel rules are being tossed in favor of a selection of approved fuels. Is this likely to mean that IT cars will be required to run $4+/gal "race" gas instead of $~2/gal pump unleaded?

[This message has been edited by Al Seim (edited October 27, 2004).]