<s>[INST] We spend more time searching for and fueling our vehicles than we do exercising and eating food that is good for us. This topic is interesting to me for a few reasons:
1) Exercise
It is good for our mental health
It is good for our physical health
It may reduce the risk of certain diseases. 
2) Food:
Also good for our minds
Also good for our bodies
Also may help keep us from getting sick. 

The above are pretty common benefits of diet and exercise that people know already. One thing that interests me is if we could design a vehicle (an intact vehicle system) that runs off the same basic needs of human well-being. Imagine having a vehicle that would run off of physical activity, eating well, and overall wellness of its user. A regenerative vehicle system that can be fueled by our physical exercise such as riding a bicycle or we could peddle or do some sort of kinetic action to create energy for the vehicle. The idea I want to strike is that a vehicle that could be symbiotic to humans in the sense that it could "live off" the basic human wellness (fitness, and diet). 

1. Those exercising get benefits; they are more fit. 
2. Those eating well get benefits; they are more healthy 
3. Those exercising benefit the vehicle; an increase in energy. 
4. Those eating well benefit the vehicle; converting unhealthy fat into energy. 

The idea would be health and physical fitness are basically a renewable resource of energy that can minimize the need for fuel based on gasoline and because our energy inputs are renewable (our own energy and food), it can be more sustainable on a large scale. To get to that point, we would need new types of human- centered vehicle design. A few designers across the globe are beginning to work on a symbiotic vehicle system that could either generate power from physical activity or convert and recycle waste back into energy. I'd like to explore different designs for a human vehicle system, and their feasibility of these projects considering a number of factors such as:

* Energy Harvesting (E-H)
* Technology/Engineering
* Cost Analysis (price increase over standard vehicles)
* Ergonomics and the user experience
* Environmental impact 

Considering these factors, could you provide some potential human-centered designs for symbiotic vehicles that are fueled or assisted by physical activity, healthy diet, or waste to energy conversion?[/INST]