We know, it feels like most of them are on your regular routes.The latest official figures show the number of cars on the road went up 0.3% last year, while the average age of cars went up to 7.44 years, two months more than a year ago. Over the last 10 years, the total number grew by 9%, a slower rise than the previous decade’s 17%. That presumably reflects the fact that we are pretty much approaching saturation point for cars in the UK.