Americans are noted for their preference for scale. Magnitude is a measure of meaning. The bigger the better. ''Thinking Big'' is the distinctive and perennial American slogan. A few years ago it was only kooks, impecunnious student couples, and two-car suburbanites in high personal property tax towns who were presumed to be attracted by Volkswgen's peculiarly European slogan : ''Think Small.'' Volkswagen's slogan worked not because it competed with America's think-big attitudes but because it actually complemented...