Are hybrid cars good or bad. I am trying to write an essay about how hybrid cars are bad for environment when constructed.

Any ideas are welcome.

I am going to focus on how hybrids such as the Prius is harmful for the environment, when they're being assembled. In making of the battery.

to some who have problems with my essay:
Why I am doing this is because I don't like hybrids, they're pointless and are being driven by people who have no knowledge about cars. If you want to save on gas, change your driving habit.