The demographics of the United States will change dramatically during the next 25 years as more baby boomers reach their 60s, 70s, and beyond. The U.S. Census Bureau projects that the number of Americans age 65 or older will swell from 35 million to more than 62 million by 2025- nearly an 80 percent increase. As people grow older today. they often become less willing or able to drive, making it necessary to depend on alternative methods of transportation.