The day I had my test scheduled (aged 17 and a couple of months), my instructor was snowed in and couldn't get to me, but the roads where I lived, and at the test centre, were fine.

I attempted to persuade my parents to let me take the test in their Corrado VR6, but for some reason they weren't keen on the idea...!

(Their other car was automatic, which wasn't any use as if you pass your test in the UK in an automatic, you're only licensed to drive an automatic).