I was actually thinking today, that a Pinball Expo piggy backed onto/with one of those "Big Boys Toys" Expo's you see every now n again might work.
That way, you could have Pinball with Cars n Jet Ski stuff, the Electronics Home Theatre big ass TV people, and maybe the motor bike Harley davidson/Jap bike section. The typical luxury "Ohhh Yehhhh I want that Show".
If ya cant beat em , join em might be an answer.