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http://www.nurburgri...k/insurance.php
foor those lazy to click and read:
"The Nurburgring during Touristfahrten is a public road in Germany and German drivers' insurance covers damage to their property and third party claims on them. Until a few years ago, UK car insurance covered the same risks. The increasing popularity of the Ring and the substantial number of crashes there led insurance companies here to exclude the Nurburgring from comprehensive car insurance cover. Unless you have specific track day cover for the Nurburgring, UK general insurers will not pay to repair your car if you crash there.
Third-party cover (anybody but you, including your passengers) is more complex. As the Ring is a public road during TF sessions, insurers cannot legally escape their obligation to meet third-party risks. In reality, because their contract with you excluded cover at the Nurburgring (see below), they are likely to pay out third party damages and recover these damages from you. "