Regarding motorcycles...
I rode my 1981 Yamaha Exciter 250 from Camp Pendleton, CA to Denver, CO in March, 1982. Went via I-40, along the southwest, through Arizona and New Mexico, hung a left at I-25 in Albuquerque. Took three days. Could not pull Raton Pass with the bike's low power at 55mph, had to draft behind semi trucks and motorhomes. It started to snow at Colorado Springs, I stopped and tied cardboard to my legs. Made it to Cherry Creek in Denver, pulled over in a church parking lot and fell over, I could no longer straighten my legs out . Had to call my dad to come get me and the bike with his pickup truck.
I was 23 years old, in the Marines, and just naturally assumed I could do anything. It was mostly true.
Best Regards,
Bill Mattocks