Further information: From the Ronald Bond collection of home movies, this is the only film with both title (Soap Box Derby) and date (1952).

Their car is named after Brumas the Polar Bear who lived in London Zoo. Brumas was born 27 November 1949. She was named after her keepers Bruce and Sam and as the first baby polar bear to be successfully reared in Britain, was an immediate attraction with the public. In 1950, she helped attract three million people to London Zoo, still the highest figure ever on record. Brumas, who was mistakenly reported as a male at the time, was a star of books, postcards, toys and other souvenirs.