diff --git a/app/rollerverbrauch/__init__.py b/app/rollerverbrauch/__init__.py
index 070e3de..85b7afb 100644
--- a/app/rollerverbrauch/__init__.py
+++ b/app/rollerverbrauch/__init__.py
@@ -71,11 +71,6 @@ def user_registered_sighandler(app, user, confirm_token):
 @app.before_first_request
 def before_first_request():
     db.create_all()
-    print("""
-    =========================
-        TEST
-    ========================
-    """)
     user_datastore.find_or_create_role(name='admin', description='Role for administrators')
     user_datastore.find_or_create_role(name='user', description='Role for all users.')
     db.session.commit()
diff --git a/app/rollerverbrauch/templates/pitstops.html b/app/rollerverbrauch/templates/pitstops.html
index 88ca8a4..25c7283 100644
--- a/app/rollerverbrauch/templates/pitstops.html
+++ b/app/rollerverbrauch/templates/pitstops.html
@@ -34,7 +34,13 @@
                                         </tr>
                                         <tr>
                                             <th>Costs</th>
-                                            <td>{{pitstop.costs}} €</td>
+                                            <td>
+                                                {% if pitstop.costs %}
+                                                    {{pitstop.costs}} €
+                                                {% else %}
+                                                    -- €
+                                                {% endif %}
+                                            </td>
                                         </tr>
                                     </table>
                                     {% if loop.first %}
diff --git a/app/rollerverbrauch/templates/statistics.html b/app/rollerverbrauch/templates/statistics.html
index f559fec..0f1ecd3 100644
--- a/app/rollerverbrauch/templates/statistics.html
+++ b/app/rollerverbrauch/templates/statistics.html
@@ -162,11 +162,11 @@
                                         )
                                     }}
                                 </div>
-                                {{ tab_script('vehicle_' + vehicle.id + '_' + consumable.id + '_tabs') }}
+                                {{ tab_script('vehicle_' + vehicle.id|string + '_' + consumable.id|string + '_tabs') }}
                             </div>
                         {% endfor %}
                     </div>
-                    {{ tab_script('vehicle_' + vehicle.id + '_tabs') }}
+                    {{ tab_script('vehicle_' + vehicle.id|string + '_tabs') }}
                 </div>
             {% endfor %}
         </div>
diff --git a/app/rollerverbrauch/tools.py b/app/rollerverbrauch/tools.py
index aef46d5..00d2862 100644
--- a/app/rollerverbrauch/tools.py
+++ b/app/rollerverbrauch/tools.py
@@ -1,6 +1,5 @@
 import logging
 from datetime import date
-from dis import code_info
 
 from rollerverbrauch.entities import \
     Pitstop
@@ -26,7 +25,6 @@ class ConsumableStats:
                 self.overall_amount += pitstop.amount
                 self.amounts.append(StatsEvent(pitstop.date, pitstop.amount))
             self.average_amount_fuelled = self.overall_amount / pitstop_count
-        print(self.amounts)
         if pitstop_count > 1:
             overall_distance = vehicle.pitstops[-1].odometer - vehicle.pitstops[0].odometer
             self.average_distance = overall_distance / (pitstop_count - 1)
@@ -57,7 +55,8 @@ class VehicleStats:
         if pitstop_count > 0:
              for pitstop in vehicle.pitstops:
                  self.odometers.append(StatsEvent(pitstop.date, pitstop.odometer))
-                 self.overall_costs += pitstop.costs
+                 if pitstop.costs is not None:
+                    self.overall_costs += pitstop.costs
 
         if pitstop_count > 1:
             self.overall_distance = vehicle.pitstops[-1].odometer - vehicle.pitstops[0].odometer
diff --git a/database_upgrades/upgrade_cathrine_to_danielle.sql b/database_upgrades/upgrade_cathrine_to_danielle.sql
new file mode 100644
index 0000000..c221633
--- /dev/null
+++ b/database_upgrades/upgrade_cathrine_to_danielle.sql
@@ -0,0 +1,28 @@
+CREATE TABLE IF NOT EXISTS `consumable` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) DEFAULT NULL,
+  `unit` varchar(255) DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `name` (`name`)
+) ENGINE=InnoDB AUTO_INCREMENT=31 DEFAULT CHARSET=latin1;
+
+INSERT INTO `consumable`(`id`, `name`, `unit`) VALUES (1, 'Super E5', 'l');
+
+CREATE TABLE IF NOT EXISTS `vehicles_consumables` (
+  `vehicle_id` int(11) DEFAULT NULL,
+  `consumable_id` int(11) DEFAULT NULL,
+  KEY `vehicle_id` (`vehicle_id`),
+  KEY `consumable_id` (`consumable_id`),
+  CONSTRAINT `vehicles_consumables_ibfk_1` FOREIGN KEY (`vehicle_id`) REFERENCES `vehicle` (`id`),
+  CONSTRAINT `vehicles_consumables_ibfk_2` FOREIGN KEY (`consumable_id`) REFERENCES `consumable` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=latin1;
+
+ALTER TABLE `pitstop` ADD COLUMN `costs` decimal(5,2) DEFAULT NULL;
+
+ALTER TABLE `pitstop` CHANGE `litres` `amount`;
+
+ALTER TABLE `pitstop` ADD COLUMN `consumable_id` int(11);
+ALTER TABLE `pitstop` ADD FOREIGN KEY (`consumable_id`) REFERENCES `consumable` (`id`);
+UPDATE `pitstop` set `consumable_id`=1;
+
+INSERT INTO `vehicles_consumables`(`vehicle_id`, `consumable_id`) SELECT `id`, 1 FROM `vehicle`;
\ No newline at end of file