A generator attached to an electric vehicle’s wheel…

A generator attached to an electric vehicle’s wheel may produce electricity, but it cannot recharge the vehicle’s battery using energy from that same battery indefinitely. Energy losses mean the setup would drain the battery faster rather than create free energy.
DISCLAIMER: This AI-generated image is for educational purposes only. The depicted setup is not a practical self-charging solution. Electric vehicles can recover some energy through regenerative braking, which works differently.
SOURCES: Science Feedback, Full Fact