If you didn't keep the license plate, you are still liable for all tolls incurred on your previous vehicle before removing the vehicle from your account. Make sure that you immediately delete your old car from your account. In the app, tap "Vehicles" from the menu then delete that vehicle. Next, add your new vehicle. Within 24 hours we'll register your new plate with toll agencies and let you know when your new vehicle is ready to hit the road. And congrats on your new ride!