I would ensure it’s impossible to activate it from inside the car. Otherwise, eventually someone might worry about you cheating toll booths.

(…actually sounds like in Texas they’re just banned outright?)

Or being a baddy burglar!

Yes, they can host a GIF on their server & show it to me with a non-personalized link, & promote it where they believe the average reader might be interested in it. Or some reader(s).

Just show me the ads you’re showing everybody else, and make money from sales of useful things & services.