My wife and I entered a 100k "Brevet Populaire" a couple of weeks back. Conditions were pretty bad but we decided to go ahead with it anyway. As it happens she hurt her knee so that about 80k into the ride she just couldn't continue.
We had a handy bailout option - the ride was never more than about 15 miles from my dad's house and he was happy to come out and get her. But it got me thinking, what do people do if they are riding a long ride, they're a great distance from the car, and something breaks that can't be fixed or you take an injury that means you just can't cycle back to the car?
Is there a standard answer, or does it just boil down to figuring something out on the basis of not having much option?