Update _form.html.erb

app/views/vehicles/_form.html.erb

@@ -13,21 +13,21 @@
         <div class="clearfix">
           Year: 
           <div class="input">
-            <%= f.text_field :year, :required => true %>
+            <%= f.text_field :year %>
           </div>
         </div>
         
         <div class="clearfix">
           Make:
           <div class="input">
-            <%= f.text_field :make, :required => true %>
+            <%= f.text_field :make %>
           </div>
         </div>
         
         <div class="clearfix">
           Model:
           <div class="input">
-            <%= f.text_field :model, :required => true %>
+            <%= f.text_field :model %>
           </div>
         </div>