Test Drive Unlimited 2. The free Exploration DLC pack, which adds a number of new events, cars and outfits (as well as a plethora of much-needed bug fixes) is available today on PC, and is coming "very soon" to consoles.
You can check out the extensive list of updates after the jump, and spend the rest of the day wondering how this game made it to store shelves with problems like "Cars sometimes turn invisible." That seems like the kind of thing you'd notice in QA, right? Actually, since the cars were invisible, they wouldn't notice them? We need to think about that one.