
I have put in a good couple dozen hours and I didn't even notice that the billboards in the game were not only of real products, but were updating themselves over time. I can only assume it's doing this behind the scenes while the game is running, even when I'm not playing online. The fact that I didn't notice them for so long proves how ineffective the ads are...
I've seen other games do this, mostly from UbiSoft. Generally, I'm in favor of it as long as its handled well. In Grid's case, it actually adds realism to the world. Obviously, this works fine in any game where the setting is a modern urban area. It doesn't work quite so well in games like Counter Strike. Though I haven't played much CS in recent years, I don't recall seeing any ads in it since this news. Maybe they never went through with it.