Do you mean this one?
The GRC Beetle rallycross car is powered by a 2.0-litre turbocharged four-cylinder engine delivering 405 kW (544 bhp) to all four wheels (4Motion). It
also features a sequential six-speed transmission, multiplate limited-slip differentials at the front and rear, strut-type suspension with ZF dampers
at all four corners, 17-inch wheels, and massive brake discs (14.0-inch front and 11.8-inch rear) with four-piston aluminium calipers.
It has an outsize rear wing, widebody guards, and aggressive front fascia. The car weighs 1213 kg, per series regulations. With this combination of
low weight, high horsepower, and all-wheel-drive traction, the Beetle rallycross car sprints from 0-100 km/h in just 2.1 seconds.
Have they actually started racing in this yet rather than the Polo?
Yogie
No, different competitions.
The Beetle above competes in the the Red Bull Global Rallycross competition, which (like the 'World Series') is a 'global' series run only in the
United States.
http://www.redbullglobalrallycross.com/
The Polo competes in the World Rally Championship.
http://www.wrc.com/en/