Video: Porsche's practical Panamera and four-wheel-drive 911

Porsche has revealed two new models at Paris - the new 911 Carrera 4, and a Panamera 'Sport Turismo' concept.

The Panamera Sport Turismo - a shooting-brake-like concept - features a plug-in hybrid powertrain allowing a range of more than 18 miles on electricity alone at a maximum of 80mph.