Nearly three in four...

Nearly three in four drivers who hire cars want rental firms to include green models in their line-ups, according to research from online travel agent Priceline.com.

The most eye-catching...

The most eye-catching details are the huge 20-inch wheels, but also note the newcomer"s distinctive "waterfall" radiator grille. The front end is set to become a styling cue to distinguish off-road Audis from their tarmac-bred siblings. That trend is due to start with the new Q7 sport utility vehicle, which will debut towards the end of this year.