"San Diego is dominated by automobile usage as a result of our increasing population, suburban lifestyles, and land use decisions dating back to the early 20th century. For example, only 3% of our workforce commutes to work using public transportation (ranking 33rd out of 50 cities). 76% of San Diegans drive to work alone; 10% carpool, leading to one of the highest congestion rankings in the country (41 of the 50 largest cities)." - Equinox Center