There's a lot of burning rubber in this episode, as Calum Iain heads to Crail for a master class in Drifting. And we stay in Crail for more fun and frolics in Wacky Races. The scores are all equal so whoever wins this next challenge is setting the pace! Murray is on home ground as he test drives the Volvo XC60 in Lewis. Can it get him from A to B as comfortably and safely as he would like? And Fiona's very happy with Cudig's classic selection- it's the ever popular MG.

It's the Air an Rathad Energy Special this week, as Murray drives one of the very first commercial hydrogen fuelled cars in the UK - a Hyundai IX35. How does it compare to other renewable fuelled cars on the market? The Arnold family put the all electric Vauxhall Ampera to the test - it's won 2012 Car of the Year, but is it to their liking? Wacky Races also goes green as the team try to catch the wind, and Cudig's classic reminds us of the old days when petrol was 16p a litre - and the Ford Cortina was the car to be seen in!