In this episode, husband and wife Hussain and Fatema from Bradford pull on their yellow racing suits and attack Hazard Highway with reckless abandon. Engaged couple James and Jacqui from Reading live together and work together at a funeral directors. Can Dermot resist a succession of funeral puns? Pretty in pink and racy in red are mother and daughter Samantha and Hollie, and father and son Jerry and Sam. With £10,000 at stake, can they leave the family squabbles at home? Finally, how will 36 years of marriage survive this relationship test? Robert and Roberta from Northern Ireland are as gentle and kind and loving as they come, but can this driver and co-driver take on the youngsters and triumph against the Stig?