There'll more than likely be other applicants there you can grab a lift with as well.
Don't try walking it - you won't give the best of impressions turning up with your shoes and bottom of your trousers caked in mud! As well as the muddy track there is a fast, main road to negotiate and if my memory serves me correctly there's no pavement, just a grass verge!
By the way why has this thread been resurrected? For any new readers, the "part 2" thread is the most up to date. Some of the stuff in this one may be a bit out of date now. Mods - any chance of locking it while still making it viewable?