Yes, it is quite stressful to you to wait two or more hours to get your next ride. But as of the Blueprints Update (March 2017), many rare vehicles that have participated in Championships, Enduro Double Downs, and Research and Development events appear here. Depending on the class, it could take you just as little as two hours to assemble your vehicle. Get up to the S-class, and it could take you almost half a day. So how do you assemble a vehicle? First, you need all the blueprints. After you get it, go to the vehicle in your inventory. Click ASSEMBLE and it will start to assemble the car. You can either wait, or give the assembly workers an incentive to give it to you right away for tokens. Watch out as some vehicles may take longer to assemble because of it's exclusivity. When assembly is complete, enter the app (if you had exited it), then you'll be greeted with a dark screen that fades to a really dark purple, and your assembled car will show. Take a few screenshots too to show off your new ride. Congrats on your new ride! See you on the track!