A new, free Forza Horizon expansion is available to download today and adds 1000 car challenges to the game.

The Forza Horizon 1000 Club add-on includes two new cars, too, the 1956 Ford F100 and the 1995 RUF CTR2.

250 Gamerscore is also up for grabs - a generous offer, although some of the awards will not be available to those who don't own other car packs.

By our count there aren't enough Shelbys, Nissans, BMWs or Fords available to unlock each of their vehicle-specific Achievements - you'll need to own several other DLC packs (or the Season Pass) to unlock all of those.

A number of challenges will also be limited to DLC cars.

"Variety is the key to the Forza Horizon 1000 Club Expansion Pack," the game's creative director Ralph Fulton said. "All of the challenges have been custom designed to fit the unique personality and strengths of each car in the game. The game even recognises which cars you have in your garage and will recommend challenges for you to try."

You can nab Forza Horizon's 1000 Club DLC now via Xbox.com. The download weighs in at 352.93 MB.