Could the Horsepower Wars be Ending?

I love all things cars but part of me wishes that the madness would stop. It now looks like that may be about to happen:

All this power on U.S. roads has translated into higher insurance losses,” the Insurance Institute for Highway Safety says in its latest “Status Report, a regular newsletter that highlights issues of concern to the insurance institute research arm. The IIHS is perhaps best known to consumers as the sponsors of the crash tests that are staples of television news magazines. Over the years, the IIHS has helped push auto makers to develop and make available a number of important safety technologies such as side-curtain airbags.

Are Auto Insurers Readying For a War on Horsepower? / WSJ