Business: Getting the Lead Out

The rise of the subcompacts is not the only remarkable change overtaking Detroit. In the early 1970s, the automakers probably will have to hold down the power of their high-performance cars as one result of new federal pollution requirements. If so, the "muscle" cars like the Mustang Mach 1 and the Buick Grand Sport 455 will no longer have the kick that enables youngsters to roar away from the stop lights, tires smoking and exhaust pipes blasting. Big engines on luxury cars probably will be somewhat less powerful. The current high-powered cars are likely to have lower-compression engines designed to burn...

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