this is close to what I have heard from a 'smart' person I work with. He said 'why don't they just put a generator on the drive shaft so that you can power the car as you drive?" I asked if he was serious (he is an engineer

:scared: not licensed yet) and if he understands physics? Really? I try not to talk with him anymore...
Had a similar conversation with a guy at a party, he claimed that an wind turbine on the car that would be powered from drivingwind while driving could charge the battery, and therefore the car could drive infinitely far.
He made the argument that the energy loss that occurs is just a matter of engineering, and that its more like a conspiracy that this doesn't exist and almost trivial to find the solution.
It was hard to stay serious but I explained how that goes against Newtons Law, and added that if he or somebody would "solve" that he would get Noble Price and be probably the most famous and richest man in the world. Inventing the perpetuum mobile.
The same goes for Fuel Cells fans without an engineering background, Im convinced that the layman thinks that Hydrogen Fuel means that you can just fill the car up with tapwater.
Therefore I always play the game that if I hear someone mentioning how Fuel Cell is the future, I say "yea that will be so awesome when you can just fill up the car with tapwater" 90% agree with that statement, then I tell them that this statement is unfortunately not true, and list the downsides quick, if they seem interested.