The comfort zone and what to do when that area is unavailable

What is a comfort zone?

This is what I call the area for which I find easiest to deal with the baby - especially if he is in a bad mood. In the truck this would be the bed where i can lay him out, pick him up, put him on his tummy, stand him up, sit him up on his pillow, etc. I can set out his bottle of formula, his bottle of water, a clean diaper, his nose plunger, his receiving blankets and have them all within reach. I can even set out the laptop in order to watch a movie with him. As I said, it really is a comfort zone.

Now, what do I do if this area is unavailable??
This is one of the more difficult situations I have found myself facing. Occasionally, especially when he is pretty tired, my husband will take a nap while we are either loading/unloading or even just stopping if we have time in order to take one - just because he really needs one. This often leaves me in a bind because that leaves me the two front seats and the floor, not exactly baby friendly places.

Setup:

First of all, I make sure that his car seat is in place in the passenger seat, with him in it, at least temporarily while I set up. I pit his bottle in the cup holders, the laptop on either the dashboard or the steering wheel and I have a diaper and changing stuff within reach so I do not have to leave the baby unsupervised on the front seat - which is incredible unsafe as you would guess. I also have a plastic box (which i keep cat crunchies in) for which I can sit on.
If he is hungry we watch a movie while i feed him.
If he is playing (usually running in his case) I place him on his back on the chair and sit on my box to make sure he doesn't roll off.

What to do when it is unavailable:

If he is wanting to sit up i hold him on my lap or move the laptop to the dashboard and seat him on the stairing wheel where he can move his head around and look outside.
Of course if nothing works and he is still being just plain cranky, I put him in the back and take him for a walk until he falls asleep or is likely to be hungry again. At one point I would rock him back and forth in the pack on the spot, but this got boring really fast and I concluded that it would be much better to actually go somewhere if I was going to be doing that much walking.
And if he is starting to fall asleep, but still wiggling and trying to play or I need something to hold him while i fix formula or food I always have the carseat in place on the passenger seat ready to hold him for me when I need it.

And when my husband wakes up, I am the first to rush to the back in the sleeper so I can have my favorite spot back.