I am like that with the drag racing photography I do. Once all the cars come around once or twice, you've got the burnout shot and the launch, there's nothing more to do. It's even worse if there's Jap cars or hot hatches there, as they are dull and generally don't move very quickly, whilst the yank tanks squirm all over, lift wheels and do huge burnouts.
I just can't get into r/c photography! I'd rather be racing.
After the Autosport show yesterday I preferred taking pics of rough promo girls instead. I think i've found my calling in life - taking pictures of dirty women.