I'm thinking of driving my motorbike to Iran. I've heard you need a 500% Carnet de Passages en Douane (CPD) to get into Iran, which would cost ~ €10,000 → €15,000. However I don't have that kind of money, even if you do get it back when you leave the country (with your vehicle). I've heard that you can get CPD insurance, where an insurance company fronts the cash, and you pay them. I've heard quotes of 10% CPD insurance, which would cost €1,000 → €1,500, which is a bit much.
Does anyone have any experience driving to Iran and getting a CPD? Where can I get cheap CPD insurance?