End of the article? Have a look at all the bolded words throughout the whole page...
Only thing I can think of (and it's a hell of a stretch) is something like this:
Are you in?
R U IN?
..
https://twitter.com/Turn10Studios/status/323058159419793409/photo/1
Edit: Forza 1000 Club trailer: http://video.gamespotcdn.com/d8/gsc/2013/04/169_forzaHorizon_exclusive_ot_360_041213.ipod.mp4
Forza Horizon 1000 Club Expansion Pack (new challenge system, 2 cars - Ford F100 1956, RUF CTR2 1995), it's free, releases on April 16th.