[Perfectlap]

Now that I think on this, it seems strategic. They talk about an outright ban on conversions to leverage their position when what they really want (but aren't disclosing) is to hold race vehicles to the emissions standards of road going vehicles, whether street legal or not. Fearing an outright ban of conversions, all the lobbying groups go along with it or some modification of that. I'm guessing someone at the EPA watches a lot of F1 races and started thinking about what we're doing to here to lower CO2 at race tracks if the F1 guys have jumped into hybrid power. Then that person's EPA boss started thinking of all the revenue that could be brought in with new CO2 racing standards and taxes.