1960 1970 1980 1990 2000* Private vehicle 69.5% 80.6% 85.9% 88.0% 89.5% Public transit 12.6 8.5 6.2 5.1 4.7 Walking 10.4 7.4 5.6 3.9 2.7 *NEWSWEEK PROJECTIONS. SOURCE: U.S. DEPARTMENT OF TRANSPORTATION