In Quick Race you can choose the type of event(drag, drift, time attack, etc), location, number of laps, time of day, and whether the opponents are racing the same car as you or just the same class.
The DLC is free on the PC and was included in a patch. I don't the number though off the top of my head though. --- Proud owner of an '88 Peugeot. http://i36.photobucket.com/albums/e14/frisco557/103_0809.jpg
Patch v1.02 included all of the DLC released on consoles, but the Community Patch v1.06 also unlocks four unreleased DLC cars (Agera, 8C Spider, DBS Volante, R8 5.2 Spyder). --- "gameplay like an old woman no realistic" - wh