why cant the spinning wheels of a car be used to recharge an electric motor within the car?

I “Want” to buy a magnetic Generator. oh please may you help?

im like having an Obsession trying to find a sight that can sale these things even if they are prototypes. im totally interested to almost near desperate! if i get any worse i would be forced to build my own witch is the last thing in my life! Medium or big doesn’t matter. just hoping to cover our fridge and heater.
they work by perpetual motion with a little electricity added for more power.

Career advice for a master roofer in SE Michigan?

I have provided roofing services to the community for about 14 years now and cannot find a secure career in this trade. Anybody have any suggestions? Going through the phone book and internet just isn’t working anymore…

What does a Renewable’s Engineer do?

So I have been looking into renewable engineering degree courses and they look good but I am just having a hard time understanding what a renewable s engineer would do, would you have to go out to the wind turbines and actually work on them physically or would it be more of an office job where you sit there and come up with new ideas of how to make things like wind turbine blades more efficient?