KPY:
Your story doesn't remotely surprise me. The ACO and organizations like that (especially in Europe) appear to be medieval in their mentality towards ideas like yours. Obviously there is a massive need for ice at this event and I'm sure many of us have sat at the event from one year to another saying; "think how much dosh you could make if you had a truck you could drive around full of ice". The sad reality is you have a couple of gyppos rumbling around in a nackered van selling frozen urine blocks to those poor souls who are sipping tepid dumpies.
The same ideas applies to grub. If someone drove round in a golf cart full of hot pizzas (aside from possibly being mugged), they couldn't make enough to fuel demand. This service exists in the States and clearly makes a killing at events like Sebring and Mid Ohio.
Dude - if you ever get the ice gig going, we'll be customers for life - sure beats the fart around we go through every year prepping all our coolers and collecting our ice supply pre-weekend.