It's probably better to go with the idea that's been done since it likely proves there's a market for it.
With existing ideas, you can emulate and study your competition to avoid pitfalls and excel in the areas your competition lacks.
With that being said, you'll need a factor that makes people choose you over them, what exactly would you be able to do better than say - Tesla? Would you be able to provide cheaper choices than them? More advanced technology?
With existing ideas, you can emulate and study your competition to avoid pitfalls and excel in the areas your competition lacks.
With that being said, you'll need a factor that makes people choose you over them, what exactly would you be able to do better than say - Tesla? Would you be able to provide cheaper choices than them? More advanced technology?