Mercedes has a sensational new high-performance coupe out in November, the SL 65 AMG BLack Series.

Fitted with a 6.0-litre V12 twin turbo petrol engine, it guarantees a supercar pace, ride, and handling.

It takes just 3.9 seconds for the 612bhp SL 65 AMG to reach 62 mph from standstill, and top speed is electronically limited to 199mph.

Mercedes-Benz hasn't put a price on the car yet, but more details can be found on www.mercedes-amg.com

Meanwhile, another hydrogen fuel cell vehicle has just gone on test - this time from Suzuki. The firm has just received approval from officials to test the car, which is based on the SX4, on public roads in Japan. Suzuki previously put a hydrogen fuel cell in several Wagon-R models, but the SX4 version looks like the one that will eventually make it into commercial production. And Fiat UK says the firm is to increase the warranty on its Grande Punto model from three to five years as a measure of the confidence it now has in the quality of its vehicles.