This was produced in the 1950s for Australian Holden cars.
The pamphlet states "Do not regard Oskarr as a toy, he ensures economic driving" ! The push up horse is attached to the dashboard of your car and then into your manifold!
The aim is for Oskarr to stand up and wiggle if the engine is running well. Oskarr will start to wilt if the engine is not running smoothly! Brilliant!
