Don Stauffer
It should work fine for that scale- I use it a lot on 1:144 airliners.
Yes, but your airliner fuselage is hollow, the OP's 3d printed vehicles are not, so he is forced to paint the windows (if I'm interpreting this right)
I remember making an HO resin (also solid, not hollow) pickup truck in HO scale long ago. I painted the windows black and on the front one painted two or three tiny white hashes. I saw it in a book somewhere back then, it was surprisingly effective. I guess it fools the eye and mimicks a reflection or something like that.
I sure wish I could attach the picture but the truck (it was my favorite, of course) was a casuality of the domestic reoganization.