Aha! I understand now, although for tooling around Hackney a tracked vehicle would be of more use - actually a tank would be perfectly suited. Intresting about the 'nice and shiney for inspection' bit, as the LAS are bringing in outside contractors to 'make ready' the motors - that is to clean and stock them, and every so often give them a 'Deep Clean'. It's needed, but I rather have then running first.