it's also portable, it is fairly light and can be carried in a handy bag over the shoulder, like carrying a yoga mat. many cars are burning in many places quite distant each other. this means you extract the maximum possible lifetime from a machine. it was therefore disappointing to learn that you found your (trip/ leader/…) not up to the standard you were expecting. arrange for someone to drive you home. this time, we had a bit of a lie in and set of at a very sensible hour, 9am. this is a good indication of when a pitcher is getting tired. 