My refrigerator extinguishes while driving, . . .

Thank You All!
For all the good information. I slid the little metal cover off of the burner chamber observation port. The flame is a beautiful, non-flickering blue color, so I am not going to mess with cleaning the orifice, . . . for now. I will try the furnace filter fix, and tape over the front half of the lower row (of the three) of ventilation holes in the exterior refrigerator cover.

Then, I'll take her for a spin, and see what happens. I will post my results.
Best Wishes,
Jeff