Hi
I have 12" solid tube Dob. You can not put the tube on the back seat of Falcon but if you lower down front seat than put it there and seat belt around it, base at the back seat and ready to go
It is a bit hard to put it in and take it out, so I got station wagon and problem solved.
There is less collimation issues with solid tube. No need for covering in between like with collapsible.
Less prone to dew problems as well.
Less chance to go out of collimation when observing things low on horizon.
Generally speaking if you have less moving parts there is less chance for problems.
At the same time I can see how it must be easy to clean main mirror if you have to with collapsible
I had to take mine out to do so.
My personal opinion is still for solid tube, price is on its side as well. In my opinion only 16" and up should be collapsible, but thats my opinion, and you know what they say: "Opinion is like an asshole, everyone got one"
cheers
bob