The correct answer to this open question is the following.
Although you did not include further references such as any text, case, lecture, or article, doing some research trying to help you we can comment on the following.
I think this system of energy capturing bicycle would be a good solution for the rescue team in some cases, depending on the circumstances and the kind of land to use the bicycle.
The energy capturing bicycle works the following way. It was devised by Denmark inventors, specifically the wheel. Indeed, it is called the Copenhagen wheel. When riding the bicycle, the rider generates energy by spinning the wheel, making the generator that is included in the wheel to move. This makes the batery to be charged. So if the rider -for whatever reason- needs more power, it can use the reservoir of energy in the bicycle.
