i'll be honest, i have loved everything you have ever posted so far, these though, there is just something missing, i'm not sure what it is, but theres something missing.
I guess you shoot a lot of people and shooting a 200mph rocket through a fence is a slightly different ball game (well lol, thinking about it you might have actually shot a rocket/missile??) if you've not really got any experience in it. we all know you have got it in you from your other pics, but for me, these aren't doing it for me.
I know what you mean about shooting or watching though, sometimes i take the camera and spend the whole time looking through the lens trying to get that perfect shot, then feel you missed the action just to get a photo, so sometimes i purposely don't take my camera to enjoy it with my own eyes for a change. that was the case with goodwood, spent two years taking photos then the third year went without a camera and people couldn't believe i didn't take one and were relying on me taking them so they didn't.