I've driven quite a few vehicles, but the only two I've had fail catastrophically were my trusty 4runner (blown 22re motor) and my Chevy blazer (700r4 stuck in first after tranny flush) both on several hundred and several thousand mile road trips, respectively.
The toyota blew in Harris ranch, on the way from Davis to Ventura, and was flatbedded the rest of the way home. No way around it. Slung a new motor in it when we got there, that we bought the weekend I arrived back home from college, from whence I was travelling.
The chevy's tranny was toast, and on a lift in St. George, Utah on the middle of a trans-US road trip (San diego to Alberta, Canada). We found a new tranny in Salt lake, drove like madmen, went and grabbed it and had it installed the next day. On that trip I also toasted my rear driveshaft u-joints. Napa auto parts pressed both out and reinstalled for $20.00. nice!
So, the case of the K5, it was definitely VERY advantagous to have a newish (10 year old) rig with a common drivetrain.
The toyota was a bit of an adventure getting it home, but my dad and I were able to get it repaired on my winter break, in time for me to use it to drive back up to Nor-cal. Having a rebuilt motor ready on a pallet at a local rebuilder certainly helped with that!
"For He so loved the world, that He sent His only son..."
1992 XJ:"Daddy's Jeep" - The "Please don't hit my Jeep again!" Edition.
2009 Ford Edge:"Penny"- "Mama's new ride, and our new trip car"