This is probably stupid but is it possible or feasible to build into hybrid cars a series of micro wind turbines to charge the batteries? Or, by adding a charging unit on a roof rack?

I am thinking about several micro turbines that would be multi finned (like a jet engine) built around alternators. The wind would be funneled into ducts containing the turbines under the passenger compartment or built into the roof.

I was thinking of the same sort of thing built into the exhaust tail pipe.

Again, it is probably stupit, violating multiple laws of physics.