Hello,
I have a L & H 85E. This fits easily in the back of a 2017 Prius. This is the standard Prius: not the more-compact Prius C, and not the larger Prius V or Prime,(which would work even better). The 85 CG is two inches longer than the E, but I think it would work. I can fit a stand in the back, but I’ve never tried to put the bench in the back. I’m sure I needn’t point out that there is no room for a passenger in the back with the harp, only the driver and passenger in front. . . although we fit a passenger in back once, it’s not something I’d repeat.
The flat, low hatch opening of the Prius is a big reason it works.