"He doesn't like to talk about it," she said of Aaron. "But I've got so many stories of so many people that, not necessarily in wheelchairs, but with some sort of trial or limitation, that have said, 'I was depressed, I didn't think I had anything to live for, and then I saw the story of your son, and it changed my life."
Aaron has his own name for the sport he dominates; he calls it, "extreme sitting."
A logo he designed for the sport looks like a familiar handicapped sign, except for the figure, which is wearing a helmet.
Someday he hopes to start his own line of wheelchairs that share parts more in common with a BMX bicycle, than a traditional wheelchair. He vows to make them affordable so that kids everywhere can get outside and be more active in their wheelchairs.
Aaron says he doesn't like the word disabled.
"It's almost -- what's the word -- degrading when someone calls you that," he said. "Disabled – I believe the definition of that is unusable, doesn't work, you know."
Fotheringham doesn't believe in limits. From the seat of his wheelchair, he doesn't see obstacles, just new things to jump.
"It just feels awesome, you know? I'm in love with this," he said. "I'm going to be riding skate parks until I die."