well,,,
my studies of ocdo maps and handgunlawus have made my charts and particulars of all the states clear for me.
oregon,,, is your biggest problem, passing through portland, you may not have a loaded gun, or a loaded magazine!
the rest of that state is open carry friendly and car carry has no restrictions.
idaho,,, is no sweat with your cpl or tape it to your forehead or to the dashboard.
utah,,, is the same as idaho except you could tape it to your but if you want to.
wyoming,,, is only constitutional carry for state residents...
but it is a gold star open carry state, and car carry only requires that you tape the gun to your forehead, or to your dashboard,
It must be "clearly visible".
colorado,,, is an open carry friendly state, in your car the gun must be clearly visible, forehead or dashboard again.
new mexico,,, is a gold star open carry state and in your car their is no restriction as to the way you do it.
texas,,, likes your CPL, and even without one, you can carry your gun in your console of glovebox.
Hope you have a good trip,,,, let us know how this all works out for you when you get back...