SAN DIEGO — From the iconoclastic VW Beetle to the swanky Mercedes-Benz, the vehicle of choice for baby boomers has followed the arc of their lives. As members of that generation edge into elderhood, ...

The LifeWalker Upright's price point of nearly $1,800 is also a deterrent, Lenker said. "In the U.S., people with disabilities are among the lowest incomes, as a group, of any demographic," he said.

Jack VanAusdall, a medical massage therapist based in Loveland, beams whenever he speaks about the first test of A Better Walker, an upright walker that he has been developing since 2013. An elderly ...