Update tailwind to v3, various wangling

vehicles/templates/vehicle_form.html

@@ -0,0 +1,9 @@
+{% extends 'base.html' %}
+
+{% block content %}
+<form action="{% url 'vehicle_create' %}" method="post">
+    {% csrf_token %}
+    {{ form }}
+    <input type="submit" value="Submit">
+</form>
+{% endblock %}