I visited my 91 year old uncle recently. He had this Suzuki and a 1948 Whizzer in the garage,
pretty much untouched for decades. This Suzuki 90 was last tagged in 1976.
I liked this page from the owner's manual:
"Experience has shown that it is preferable to use a comparatively large
motor running at a moderate speed in preference to a smaller motor running
at high speed."
-Harley-Davidson sales brochure - 1905