The decline is small in number, but in the scheme of things, it’s huge: New census data out last week show car commuting among Americans is finally, after decades of growth, starting to reverse itself. Driving to work is still the predominant mode to a depressing extent. Almost nine in 10 Americans get to work by car and about three in four drive alone. But those numbers are beginning to fall. Since 1960, the percent of Americans driving to work rose from 64 percent to a high of 87.9 percent in 2000. Since then, it has declined slightly but meaningfully to 85.8 percent. The percent of the population commuting by car ticked down again in 2013, the latest year for which numbers are available.