Motoring numbers

309,500: Price in pounds paid for an Aston Martin DB4GT at a marque-exclusive Bonhams auction back in 2003 - the highest figure a vehicle has achieved at such an event.

30: Cars newer than 30 years of age can't be imported into Australia and used there unless they're converted to right-hand drive.

19.2: Improvement in mpg of the 61.4mpg Citroen C1 1.0i over its 1996 equivalent, the 42.2mpg Saxo 1.1i - nearly a third better.

8m: Amount in dollars Warren Avis, who died recently, made when he sold Avis Rent-A-Car in 1954 - he founded it eight years earlier with ,000.