It is a strange phenomenon access to the grid.
I do think in some sports access to the actual track is a great thing to do.
Obviously in a safe way. After the last BSB race there is usually a controlled invasion that I have been a part of a couple of times, it's great to be on the hallowed ground and the riders love it, you might also get lucky with some clothing freebies!! Have also done it unofficially at Donington when a guy won a 500 race there.
And at a far lower level at a short oval event a few years back there was a huge race for one of the bigger formula's and they did a great thing, got all the cars competing in that event out on track pre-meeting, with the drivers, letting kids sit in the seat etc, autographing, chatting, great photo opportunity.
It went down brilliantly and everyone talked about it afterwards as a real great aspect of the night, has it been done again? No. Apathy yet again.