I bought a few of these "fishbowl" buses at my local CVS a while ago too, and they're not quite to scale. I also ordered some online that were advertised as 1:64, but they were the same casting as the previous ones. Bummer. They scale out to 32.5' bumper to bumper and about 7' 3" wide. A six-footer would have his chin at the bottom of the window sill. Close, but no cigar. I gave them to my grandson to play with.
With all the nicer 1:64 vehicles out there, notably, the M2 line, it's surprising that no company has made a well scaled out bus yet. With all the talk out there of the lack of buses, you'd think that would be a good opportunity. Hey, M2, are you listening?
A few years ago, Norev made a beautiful version of the GM Futurliner, admittedly a rare vehicle to begin with. Only 12 were made for GM's Parade of Progress. Now, if a company could make such a low production vehicle, why not a more common version like the "Fishbowl" bus that saw usage all over North America? By the way, along with the Futurliner, I also have a set of the GM concept cars from the 50s. It makes a nice display in the City Park on my layout. I just need to find a set of figures of little boys drooling over the cars... in 1:64 scale, of course. 
And for those who missed on getting a Futurliner, Fairfield Collectables is coming out with one very soon.
