Hi George.
You shouldn't have too much trouble with a 10" in an average sedan. Jen manages to move her 12" SW Collapsible in her little Hyundai. Tube in the boot and base on the back seat. Ring up the dealer and ask for dimensions if not sure, thats what I did before I got the 12" GSO to make sure the base would fit in my car.
GoTo means that the mount is capable of moving to an object and then tracking it over a period of time. Obviously adds more to the initial cost but can help to make your observing more efficient. GoTo is not necessary when viewing DSOs IMHO as they dont move that quiock out of field so easy to move scope by hand.
A dob even with GoTo is not usually going to be suitable for imaging purposes as it is not a Equatorially mounted scope. Short exposures of very bright objects (moon and planets) is possible, anything else you will need to remount on a decent EQ mount. EQ6 is probably the minimum. Haven't heard of anyone doing this with a SW Collapsible, but I am sur it could be done but I would be worried about flexure.
Hope all that helps
Malcolm
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