"The abrupt end of the Renault Avantime was entirely predictable." "This is merely the latest in a long line of failed French luxury cars." "Buyers will always choose a BMW, Audi or Mercedes over a Renault." All three statements are received automotive wisdom and have been much spoken since Avantime production ground suddenly to a halt in late February. A careful examination of Renault's luxury car strategy however, suggests things may be less straightforward than that. Glenn Brooks reports.