Billboards for ads

What category would this suggestion fall under?
Examples: * General * Organizations

Explain in detail how this new feature would enhance RP and/or a Game Mechanic:
Being able to buy billboards for people who want to advertise their business so that way people driving by would see the billboard and think about buying the product.

Parting Thoughts:
Just if it’s possible if not it’s cool just a way for more people to spend money in game.