The creators taught Buddha about the substance of the Universe. Accordingly, early days Buddhist statues, paintings and others were of the vehicles of the creators, that is many wheel treasures were depicted.
In the Buddhist sutras there are also many mentions about the Wheel Treasures, and for example:

• Something not from this world.
• A golden circle suddenly appeared in the sky.
• A horse carriage suddenly appeared in front of my eyes.
• A Wheel made of pure gold may also have a diameter of 14 shaku.
• While Golden Wheel Treasures stopped in the sky above the palace…