If you plunked down the $50 required to buy the Forza Horizon Season Pass, you have six cars coming your way. The first monthly car pack, called the "November Bondurant Pack" drops tomorrow. Microsoft has detailed the half-dozen speed machines you can give a test drive.
You'll be able to drive the 2012 Lamborghini Gallardo LP570-4 Spyder Performante, 2012 Shelby 1000, 2010 BMW M3 GTS, 1965 Shelby Cobra 427 S/C, 1994 Nissan 240SX SE, and 2012 Jeep Wrangler Rubicon. You could also buy this pack separate from the Season Pass for $5 (400 MSP).
Five more monthly car packs are planned for the game, all of which are included with the Season Pass. It will also get bonus cars and an expansion pack. If the cars included in this first one tickle your fancy, it may be more economical to pick up the full pass and get them all.