Donnie, Linda and Murray are back for more motoring fun, driving some of the greatest, most exciting, and most expensive cars on the market today. They take part in motor events and meet the car fans; and they are back on the road again, with the Air an Rathad Rally. Donnie is off to the Grampian Transport Museum in Alford for the "How Many Left", event: a car show with a difference. And it seems to have a bit of an unusual effect on him. Linda is driving BMW's new baby M car, the M2. With the recent M3 having grown up a bit, can the M2 put the fun factor back into the German manufacturers arsenal? And the teams find out what they have in store for them in this year's Ralaidh na Trealaich. They find themselves in an unfamiliar location with no sign of any cars. Will all become clear?