Hello...my friends and I will making the drive from Arizona to Massachusetts soon and it looks like our original Route (I-44/40) is blocked by massive tornadoes right now. We were thinking of taking I-25 North to Denver, then across I-76. My question is, does anyone know if that part of I-25 thru Colorado Springs is really mountainous? One of our vehicles will be towing and the other is a 1970 VW Bus...not vehicles we want to be driving thru the peaks of the Rockies...any advice would be helpful!!