My SO and I are about to move from Austin to central NJ. We'll be driving one car and driving a 16' van towing another car on a two-wheel dolly. It will be the first experience for either of us driving something so long or with quite so wide a wheelbase. We're looking for overall time savings more than anything else, as we need to do the drive in roughly 3.5 days, but having an easy and relatively clear road would likely be a real help.
Google Maps has three potential routes, and I'm hoping for some advice on choosing between them based on terrain, traffic, and overall forgivingness. All take us Dallas--> Little Rock --> Memphis --> Nashville but then diverge until central PA.
A. via Roanoke: I-81, I-76
I read in another thread that I-81 wasn't all that bad elevation-wise (and I've seen it from the air recently) but also got the impression that it can fill up with big-rig traffic and may involve some narrow squeezes.
B. via Charleston, WV: I-65, Bluegrass Pkwy, US 60 I-64, I-76
Looks like this has a small stretch of non-controlled-access at Lexington.
C. via Cincinnati: I-65, I-71, I-70, I-76
On face, the least mountainous of the routes, but it passes near the downtown areas of both Louisville and Cincinnati and also isn't far from central Columbus. Asking for trouble with traffic?
Thanks very much for any input. I'd also appreciate any related advice about good places to stay the night, driving with the dolly, etc.