Ten-year-old Quinn Schnitzlein has been using a power chair since he was 3, so he’s a pretty good driver. But the boy from Marietta, Ga., who has spinal muscular atrophy (SMA), often bumped into things when he backed up.
One day last year, Quinn and some friends were at a fast-food restaurant. “We were at different tables,” Quinn says, “and when I’d try to turn around to talk to them, I kept hitting things.”