as our old RV (and us) don't like crossing mountains... what is the lowest altitude going from the west coast to the east coast across the mountains. i was told that I10 is flat but elpaso is 4000 f...
You know I hate Mountain passes also as I have horrible fear of heights but I've taken 90 thru the Rockies and 80 and even 40 without issues at all because the roads are 3 and 4 lanes. What about taking 15 to 80, I haven't done that but it doesn't look bad at all lots of places to stop.