Instead of driving the long way you can purchase Fast Travel from the Map to instantly travel to a Festival site. This will cost 10,000 credits each time you travel minus an amount for each Fast Travel Bonus Board you have smashed. Unlocking the Fast Travel perk from the Skill Shop will allow you to travel to any road point on the map instead of just the Festival Sites.
The Treasure Map is a DLC purchase that reveals all discovery items on the map: cameras, signs, bonus boards, and hints to Barn Finds.
(Written by Manteomax)