[karatemom]

So then, if we form Christians, Inc or Catholics, Inc, then we would also be permitted to purchase advertising space on those same buses???

[antiRepublicrat]

You don’t have to form a company. Christian groups have spent probably several orders of magnitude more money for public advertising than atheists.

But we would have a problem if this specific advertising venue rejected Christian advertising because it is religious in nature.

[HelenChicago]

So then, if we form Christians, Inc or Catholics, Inc, then we would also be permitted to purchase advertising space on those same buses???

Yes, but you'd have to forfeit your tax-exempt status. Consider carefully....