Etna
Car parks sound fun. However the best I've managed is about 12km, freewheeling down from 2,000m from the refuge on Mount Etna almost to the nearest town (the traffic got dodgy, which was hugely disappointing).

For your information, you shouldn't try this with a new Clio. First of all, you shouldn't really have one, as they are horrible plasticky bits of cack, but (if you are unlucky enough to hire one) as has been pointed out if you switch the engine off, everything goes, but only slowly. So at first you think that everything's fine, then, coming to a corner, the brakes and the steering which were working a while before, suddenly don't. Yodelling? Yes.

The girlfriend still doesn't know why I went somewhat ashen in that descent...
(groover j lazerus, Sun 11 Jan 2009, 20:35, Reply)