BMW Isetta

The bubble car is back! BMW’s iconic Isetta was introduced way back in the fifties, but it’s set to make a comeback, and become the greenest model the firm has ever produced. As with all BMW’s the city car will be rear-wheel drive, but with the engine positioned at the back too. And just like the Toyota IQ it will feature a clever 3+1 seating arrangement with an occasional seat behind the driver.

From launch a choice of small capacity petrol and diesel engines should return over 100mpg and less than 90g/km of CO2. But the real revelation will be an all-electric version, likely to make an appearance in 2011.