Agreed, I also like the super stealth I have in my Prius, with dark tinted windows and some trick flat black fabric (never seen any other like it, stumbled upon it in a fabric store, it sucks up light and is totally opaque, shining a flashlight in, like a cop would, you just see....black, can't even tell it's fabric hanging there, I screen off the back sleeping area with it). Plus, the Prius has a squeaky clean rep, it pretty much screams "I'm a productive law abiding member of society, ain't nothing going on here." If they only knew, ha ha! With my E-Montague folder inside, where the removed passenger seat goes, ( with another piece of that fabric covering it) no one can see squat. This stealthness has been handy a few times, almost accidentally, and allowed me to take a ride that may or may not have been allowed if I had pulled in with a bike on an outside rack. The lack of worries about theft while parked is nice too, mostly though I just like being sneaky, "it's easier to apologize then ask permission."
But, seeing your rig has inspired me to see how my non folding efat bike fits inside my RAV4 Toyota, (I'll take the front seat out, roll it up far as possible, tire against the dash, just not sure the height will work) as I have another Moab trip planned around Thanksgiving and the fattie is my preferred ride there. When I carry the fattie on the Prius rear trailer hitch rack, I can see the difference in the mileage due to the extra drag, (2-3, I have a ScanGauge that gives real time mileage) so usually on long road trips I take the Montague, inside, and keep it all aero clean as possible, the trade off being less plush accommodations once camped out of course. 20+ mpg difference between the RAV4 and the Prius, so something to consider! Even more if the fattie is carried outside on the 4's rear rack, 25 mpg difference.