Gents,
Strongly recommend looking at http://nurburgring.org.uk/carhire.html
I have not used them before, however Grant (Boosted) did hire when they had the Alfa 75 company.
This way you know the risk and the cost, then when you think you are comfortable take the ZED out. Just a way of testing how much you want to do it before taking a chance at total loss of uninsured Zed and big bill for arnco.
Zedrush, no offence, just want to you have both side of a story, as there is 10+ people on here that are also over here.