This topic comes up often at antique fire truck meets. I think there a lot of factors that make the shows change over time. Not the least is that there a lot more "antiques" than there used to be. When shows were held in the 70's or 80's rigs had to be from the 50's or older to be considered old, now all those rigs from the 70's are in the show. The rigs from the 20's, 30's, and 40's are still around, but they are in a garage somewhere because the owner lost interest or just got too old to get it out. Most of these rigs are not roadworthy enough to drive any distance to a show, so you need to have the means to trailer them, not something everyone can afford. Plus it is hard to keep them running as they get older. I'm re-building a 25 AB now and believe me it is not for the faint of wallet, even if you do the work yourself. I am also having a hard time locating parts, something a 70's era truck owner doesn't have to deal with. Most folks start avidly collecting and showing rigs as they get older, hence they want to own the trucks of their youth. That is why so many 70's rigs are on display these days. Would todays collectors use and display a rig from the 20's? Sure if they could find one the owner would be willing to sell for a fair price, not the full cost of the restoration. As to the future of shows: they will change and evolve as all things do, but the one unchanging thing will be the nature of the people who show their trucks. They will always be the nicest people you can meet anywhere. And for all those folks who love old trucks but cannot afford to get their own; join a local chapter of SPAAMFAA or ATCA and get to know the members. We are always looking for someone to drive a truck to a show for us and would love to have someone show up to help us twist wrenches on our stuff. You get to act like an owner without having to pay for it.