12 - 8 = 4

So we stared with 12 cylinders and the Aston out first thing in the sunshine - yes saving the planet again.

Then down to 8 cylinders and the Ferrari off for a run - she started first time - several times. Hard to get in and out though through the roadworks.

Then finally the balance - 4 cylinders - the Caterham around the block - via a small drop off.