In an attempt to improve manoeuvrability, the e-tron quattro is fitted with all-wheel steering similar to the system offered on Porsche's 911 GT3 RS, the rear wheels turning in the opposite direction to the front wheels at low speeds for a smaller turning circle and working in the same direction as the fronts at high speed for a sense of stability.

Audi has given its latest SUV concept a sleek and coupe-like sloping roofline and tapered glasshouse. At 4.88 m (16 ft) long and 1.93 m (6.3 ft) wide, the e-tron isn't a small car, but it looks far sharper than the bigger, more traditional Q7. With a drag coefficient of 0.25, it's also very aerodynamic for an SUV.

This is partially thanks to the sleek shape of the body and partly thanks to electronically-actuated aerodynamic elements in the bonnet, the side of the car and at the rear that activate at 80 km/h (50 mph). Just as it has done with the new A4, Audi has also worked hard on the underbody to cut down on drag. The e-tron has a fully enclosed floorpan.

Eoin Treacy's view

Tesla was first to market with an attractive luxury electric car and continues to reap the benefits of being the best in class. However that success encourages competition and the company’s ability to be also the first to deliver an electric SUV will a major milestone. 

Tesla has been largely rangebound since its September 2014 peak. It has rallied impressively from its late August low to test the short-term progression of lower rally highs evident since July. A sustained move above $260 would signal a return to demand dominance beyond the short-term bounce. 

Volkswagen (Est P/E 7.53, DY 2.87%) has the resources to become a major competitor for Tesla over the next decade. The share experienced a deep pullback from its March peak to its recent steadying near €160. A sustained move below that level would be required to question current scope for a reversionary rally.