Introducing one of my best friends, the puncture repair kit. Handy and useful, a life saver in the most unexpected situations, especially combined with a portable air pump.
If you don’t have a pump and the closest servo is not that close, here we go with Mar’s homefix of the day. I know it’s pretty unorthodox as all my crazy ideas, but will give you those extra kilometres you need to get to the service station.

