Can you transport a dob in a car cargo roof box? That is my big concern. I dont do backpacking so my car is close but I might have to walk around to find a good view.
If the dimensions of the cargo box are greater than those of the Dob, you can... But once the Dob base is assembled, it may be too big to fit a rooftop cargo box. And loading it will be awkward. I would not want to lift a heavy Dob OTA and its base up on top of a car, but then I'm an old woman.
I would also be concerned with making sure the OTA is well-protected for transport.
I don't know where you live or where you like to camp. I've camped at state parks in Michigan, Indiana, Illinois, Kentucky, Tennessee, Missouri, Arkansas, Mississippi, Louisiana and Texas, at different campgrounds in each of those states. Except for one of the Texas parks, they had a lot of trees onsite, and the campsites were not a good spot for setting up a scope. There are usually open areas where you can set up, but you have to drive to them or carry the scope some distance. For camping, think smaller.