Even the wheels are made of wood. The Splinter Car was inspired by a WWII aircraft, the de Havilland Mosquito, also made almost entirely out of wood.
“Wood has fantastic performance capabilities. It has a higher strength-to-weight ratio compared to aluminium or steel and you can use it in composite form like carbon fibre or fibreglass. It also takes very little energy to produce a piece of plywood compared to aluminium, steel or carbon fibre and it’s not oil-dependent but naturally renewable, sustainable and biodegradable,” says Joe Harmon, designer of the Splinter Car.