How did superman end up in a wheelchair and then die?

according to my knowledge there was only one way to kill him and that was with kryptonite. how can he fall off a horse and break his neck unless he had some kryptonite on himHow did superman end up in a wheelchair and then die?ok, the dude who PLAYED Superman got killed, not Superman himself, you dummy!!How did superman end up in a wheelchair and then die?I think you have fantasy and reality a little mixed up. Then there is also the possibility that someone hid kryptonite in the saddle.LOLHow did superman end up in a wheelchair and then die?LOL, I thought you were gonna say something about Doomsday, but you meant Christopher Reeve. Good one. It might be too soon though. Christopher Reeve was cool.