Take your top box and cut holes in them. Then add screens. 2 Yorkies should be comfy. Make sure the windows are to the sides. If the windows are to the back, the will get too much exhaust and road dust. \
I like the rest don't agree with dragging the pets along on real trips. Riding around town is one thing. But the open road is a bit much. On the other hand I don't agree with taking the wife either. Leaving her home would solve both problems.
Screw this shit. I'll meet you there.....