one word
stealth
the black thing has obvious stealth overtones
designed (yes it had to be designed, nothing that f-awful could only just HAPPEN) so that as it staggers past speed cameras the Gatso Imps inside, wot usually flashes the lamps, were bound to have paroxysms of U-poo-bot with the unaccustomed laughing reflexes...
In fact awful as it is I expect the Gatso Imps would come out of their high altitude lairs to give it a push o the next one, so they don't have to look at it for any time longer than a millisecond or two.
Hmm, I saw a cardboard box down by the side of Chester Road tonight, and the Metro does give me an idea for Lara.
Where's me gaffer tape?
Black or silver?
decisions decisions