This is just a simple race in The Saboteur for the Xbox 360. The twelfth mission in Act 2: On Your Marks… Get Set... is where Horst is waiting with a good car right near Margot's base. This is a solo race mission to unlock the races throughout the rest of the game. The key to these is really just practicing the route. There aren't waypoints, so you can take some shortcuts, but the highlighted route is the most direct, so this won't amount to much more than corner cutting. For more info, watch the whole gameplay.
This is a "The Saboteur" walkthrough for Act 2: Mission 12 - On Your Marks… Get Set....
Mahalo's "The Saboteur" Walkthroughs are more than enough information for you to play the game yourself, and they teach you everything you need to be prepared. They lead you through the world of Saboteur and all of the tricks and achievements you will need to conquer along the way, moving from chapter to chapter. This video walkthrough focuses on Mission 12 in Act 2 (On Your Marks… Get Set...).
The Saboteur by Pandemic Studios is the open-world action-adventure video game available for the Xbox 360 and PlayStation 3 consoles, along with Microsoft Windows. Avenge the loss of your loved ones by hunting down your sworn enemies in Nazi-occupied Paris during World War II. Fight, climb, and race your way through this unique world to destroy the lives of those that have taken everything from you. Enter the seedy world of a saboteur living in a stylized 1940's Paris, where the women are sexy, the missions are epic, and the revenge is satisfying.