To get this quest, you must gather 5 machine parts and assemble them to create a new D.R.I.V.E. feature for your G-99 Breakneck goblin car. The materials drop off of bosses, rares, and treasures around undermine, and they create several items like Handcrank and Steamboil. After you have assembled the item, right click it. The first time you do this, you get the Burning Rubber quest. Anything you create after that will not pop the quest, but it will go directly into the D.R.I.V.E. menu. You DO NOT need to be in the garage to use the items, but you will need to go to the garage to turn this quest in. After doing so, you can access your D.R.I.V.E. menu and pick which D.R.I.V.E. features you want to use on your car. Note that after you've assembled an item from the 5 parts, any additional parts can be vendored for 25g or auctioned. The auction deposit on these items is quite high, so make sure you'll make more than 25 g from the auction after paying the deposit. Chances are, it will be more gold to vendor it.