mechanic/car/motorcycle/garage dlc

I thought a great dlc would be like the topic. mechanic career branching to cars/motorcycles with all the items to go with it. tool-boxes for metal-crafting/welding, home deco items that would go with it, options to buy cars/motorcycles to work on, and the ability to use them on tracks that are in a new area containing tracks to use them on. think nascar meets rally off-roading.