Beattie, the daughter of Jennifer Saunders, reveals her mum made her write the Ab Fab scripts in the back of the car on way to school, and often Jennifer wrote scripts on the way to episode read throughs.
James Acaster and Josh Widdicombe challenge Harriet Kemsley to live life like she's in the film Speed - including a moving trip to the opticians for an eye test at 2 miles per hour.
