Hey Jack, that sounds amazing what you are planning
what are you trying to achieve exactly with your show? What kind of vehicle do you want to exhibit?
The first pic looks very professional, so if you trying to do something like this I suspect you have to pay for quality!
I informend myself on the site, they say:
"Showrooms with seating, with catering area and standing tables, with technology for a light show" and
"free rein in the choice of the location at which you wish to present your products. Worldwide."
[source]
So worldwide is the key word for you I guess, and it fits with your interest to be flexible, right?
Just Inform yourself on the site or similar providers and ask there about the costs and everthing else!
Greets from Pete