@Override
 public ContentValues extractValues(Fueling f) {
   ContentValues cv = new ContentValues();
   cv.put(FuelingTable.VEHICLE_ID, f.getVehicleId());
   cv.put(FuelingTable.FILLUP, f.isFillup() ? 1 : 0);
   cv.put(FuelingTable.COST, f.getCost());
   cv.put(FuelingTable.DISTANCE, f.getDistance());
   cv.put(FuelingTable.FILLDATE, f.getFilldate().getTime());
   cv.put(FuelingTable.ODOMETER, f.getOdometer());
   cv.put(FuelingTable.QUANTITY, f.getQuantity());
   return cv;
 }