When it comes to transportation in the US, most people drive themselves. The US Census Bureau's American Community Survey 5-year estimates for 2014 indicate that about a quarter of American workers get to work primarily by driving themselves. In 2014, there were 214 million licensed drivers in the US, and light vehicles traveled 2.7 trillion miles.
However, according to the Bureau of Economic Analysis, between 2000 and 2015 consumer spending on public transportation services outgrew spending on new motor vehicles, with the former increasing at a compound annual growth rate (CAGR) of 2.2 percent and the latter at a CAGR of 1.8 percent. In 2015, consumer spending on public transportation exceeded $100 billion in the US for the first time ever.