Insurance issues come to mind in a hurry. I do know that some race tracks worry about how fast and close the drivers get in the old cars, especially cageless open wheel cars. If the insurance bill is too prohibitive for vintage cars, then the trend will be for display only. Some like doing only that, and yet a few want to crank several thousand rpms , running sideways. It's all good mind you, but if vintage cars get a bad reputation for insurance liabilities, then the writing is on the wall. Promotors watch each other, and even meet each other throughout the year- and they do relate their experiences. Just like you, they make their choices based on their mindset.



Down here, most of the guys running vintage cars will not even show up if there is a referance to racing. "Hot laps", become racing if drivers don't use their heads- but in most cases I've seen that isn't a problem.

I know you didn't say you wanted to race, but if you look around, you'll find it is hard to get several old cars to run 'hard'. The terms "race", and "hot laps" are divided by a very thin line.