Except that the Beetle platform is a thin panel, and the Bolt battery is a thick box (173 mm or 6.75" tall). Are you planning on having the bottom of the Bolt battery case slide on the ground, or are you planning to jack the Karmann Ghia up like a 4X4 truck to regain clearance?
Yabert's van had a much higher floor than a Karmann Ghia, and now it has reduced ground clearance. That works for the van, but wouldn't for the car, even without the huge hole and structural changes needed to accommodate the taller part of the pack.
All excellent points.
Thickness is a problem.
Maybe a compromise can be met.
Folks often put 2.5" drop spindles on Beetles/Ghias. Obviously wouldn't do that, but
Maybe there is enough clearance for a split the difference approach. A car does need ground clearance, but for street and hwy use, less is needed. A camper implies a modest amount of offroad use.
The torque tube looks to be about as thick as the battery. So that is promising.
The back seat area can accommodate the tall portion of the battery box, another bonus.
The floor and battery pans are virtually the same dimensions in length and width. This is a big deal for many of the same reasons Yabert has said regarding keeping the battery sealed.
Raising the floor creates issues for tall folks. I am 6 ft tall. Shorter seats can help there.
Not discounting your points, but, so far alot of positive indicators point toward potential for good integration. 😉