This is not a scenic cruiser, but it is from about the same era, and is advertised at 1:64 scale, and is advertised at only 3.5 inches long.
I ordered one for my layout, a little pricey, but I have always thought these things were outrageous.
And I want a Scenic cruiser also, or at least the early 50's vintage GMC bus lettered for Greyhound. Very hard to find in 1:64.
Aflyer