The Paris - Dakar Rally: the most dangerous race in the world, and with only a 40 percent success rate there's a good chance you won't make it. The Plymouth - Banjul challenge covers a similar route but with cars costing under 100 pounds. Claire and Fiona must drive 4,200 miles, over the Atlas Mountains in Morocco and through minefields in Mauritania in a 1972 Beetle that hasn't run for 15 years!