fix issue 8

app/forms.py

@@ -82,7 +82,7 @@ class CreatePitstopForm(Form):
         if self.date.data:
             self.date.default = self.date.data
         else:
-            self.date.default = self.last_pitstop.date
+            self.date.default = date.today()
         if self.odometer.data:
             self.odometer.default = self.odometer.data
         else: