Well I went through it and aside from being terrified at the next layer of pork I see our government gleefully jumping into (see section on special credits given to whomever we feel like because you kiss our (congress's) butts in a perfunctory fashion)

This was all I can find in relation to engines "`(4) to establish a motor vehicle global warming pollution emission requirement"

Nowhere else could I seem them mention engines unless it was to define the size which was the vehicle weight over 8500 lbs etc.

They even list a schedule of how far reaching this item is in terms of years down the road (2050) and it still never takes into account small engines.

So a big raspberry to the OP. C'mon Chicken Little, just where a helmet.