I was at the Henry Ford Museum a few years ago and took some photos of the Quadricycle and 999. I gotta agree with Brent, the 999 had my attention more than the Quadricycle!
Quadricycle. Tough to get decent photos:
https://goo.gl/photos/zFfeqdxyWPETDg8e9
999:
https://goo.gl/photos/e2YqCseEGhHeeshdA