I know I'm dull and predictable, I'm going to take an Audi RS6 Avant, because it'll pack in an indecent amount of booty, looks inconspicuous enough to fit in on a High Street, and will blow all the bacon into the weeds, whether its in LA with Crown Victorias or Britain with Vauxhall Vectras/Omegas. Or France with Peugeot 607s. In fact, I think the only place you wouldn't get away in an RS6 would be Germany, because they probably use RS6s and I know for a fact they use Porsche 911s... I've seen ex-white & green ones up for auction!