A Mattress On Wheels.
Fed up with having to do deliveries for the shop in all weathers on his bike Granville suggests that Arkwright invest in a van. Needless to say his uncle baulks at the expense until Granville points out that it could be a mattress on wheels, a means of impressing Nurse Gladys. So Arkwright buys a second hand one and Granville wishes he hadn't when he takes it out on the road.
