.A day or two on the geographical search is certainly going to bring up most of your potential buyers. I personally haven't done outbound for a long time but, this is one of those names I probably would be tempted to. I'm going to assume there is around 50 supercar specific rental outlets. It may well be worth using good old pen and ink to contact each and every one (duplicated letter of course) Why not include proof of domain ownership as well.
You could leave the price blank for the initial notice-of-interest and then play it from there. I can guarantee the predominant interest is going to come from UP North. Those Asian kids love to Grand it and why not.
Price is very much down to how much interest is shown. You could very easily go down to a private bid submissions.
PS. No I don't know what Jordon M is upto/on either. maybe he's not aware how interchangeable Rental & Hire are here in the UK