It’s not that hard.
- rent a store front. I know where there are several
- buy about 50 or 60 exercise bikes
- modify the bikes so that pedaling generates electricity
- connect the bikes to a battery.
- charge my car from the battery
Advantages are simple. No problem generating generating co2 anywhere. Well, those doing the pedaling will expel a little.
Other than my initial costs, the electricity is free. I let them use the bikes free and they provide power for my car. Now let me see, I just might draw a few of my customers from other gyms.
Okay. It won’t come close to working. Still, isn’t it a shame all that energy put into pedaling just goes to waste? I mean how much power could you generate off fifty bikes?
bfrhodes99 
Sounds like a solid idea.