Hypermiling Mentioned on NASCAR!!!

So I watched NASCAR the other night for the first time with a buddy and they mentioned hypermiling.  It was near the end of the race and instead of the drivers taking a pit stop and losing race position, the drivers were shutting their cars off to conserve gas.  What a novel idea?  Now if professionals are doing this to win a race, can't we all attempt to do a little hypermiling to win the race of life???