The Panther Rio was always destined to fail. It was a good idea by Robert Jankel to launch a car that offered top-drawer luxury in a more manageable package, but the execution was spoiled by the fact that the Rio too closely resembled the car it was based on – the Triumph Dolomite. The body was re-skinned in hand-beaten aluminium, and that pushed the price up to such a degree that for the cost of a Rio Especiale you could buy a Jaguar XJ12 and still have some money left over. A surprising number of the original 35 still survive, and good ones are sought after.
info from Octane