Backflip in wheel chair

I just watched a video of the kid who did the first backflip in a wheel chair. He has a disability so he is in a wheel chair all the time. He trained himself to use his wheel chair as a skateboard and does spins and tricks next to skateboarders and bmx riders. He doesn't call it skateboarding, I think he said he calls it hardcore sitting. But I thought it was amazing that he had that much determination to complete a backflip in his wheel chair.