Surprised this doesn't fall under libel, claiming to partner with a brand and put words down as if they said them. Not that I don't support God tier trolling of gas companies, just seems like they'd make a litigious move.
Well, they're on billboards so someone legally owns them even if the activists were the ones renting the spot. Someone has their real name tied to those and I'm sure a corporation would try and get something out of them.
Nope, they just put up their version of the billboard on some ad companies infrastructure. It is illegal, but does not carry a big punishment, and even so it is not enforced by the police. They even have a guide on how to do it:
