Probably, but the Nascar games are difficult. Maybe that's the reason, but what company would want to see their product put to shame? Motion controls really aren't needed in racing. It is still odd that Wii has no racing simulators, I agree very much.
Yeh I don't think motion controls are needed either, but the way they were used on NFS was very good I thought - particularly the option that acted as if the Wiimote was the accelerator, and then you just used the analog stick to steer
Yeah I've got one of them plastic steering wheel things, I don't like it though, because it's not fixed it's hard to get a sense of it...I absolutely love racing with a steering wheel and pedals though