How fast is too fast?

This is a personal favorite. I wonder where it is today? I took these photos several years ago in Wichita, Kansas.

Well, I read the title of the thread and was going to say maximum speed should be determined by quality of brakes and road conditions. But…

Very neat car.

The Speedway Motors Museum purchased it before Gary passed.,21520.html

The front 4 cylinders have a Waukesha Ricardo head, the rear 4 appear to have a regular head. Would it not affect the running having different compression ratios?