Today (2 May) is Billy Cart Derby Day in Braidwood. Information about the day is hosted at Braidwoodbillycarts.
Specifications
Race Rules
Race Procedures
I liked the wikipedia entry:
In Australia billy carts tend to conform, even in the 21st century, to a more traditional or rudimentary specification often being constructed informally by juveniles from found or inexpensive materials with minimal adult input and used without safety equipment.
So I am looking forward to an exciting day of racing!
Photo Credit
Ginger Meggs Salvage Corps