David ,it is still missing some NZT pieces but my money is current going for a NCE DCC starter set.
Avel the layout is 52" long (so it will fit in my wife's Cavaleir) the narrow end is 24" and the wide end is 30.5" ahain to fit in the car.
It is not heavy it weighs in at roughly 35 pounds.The only real problem id because of it's length is getting it out of then back in my basement (steps are steep and the is a 90 degree turn to the left and another one to the right)
I am using MTL roadbed track,I like the looks of it but options are rather limited.If and when I build a new one it will be modular and longer but most likely the same width.
I usually make modifications between shows and the next one will be a creek on the right hand lower cornerlooking at the top photo.