library/car_driver/views/car_view.xml

<?xml version="1.0"?>
<odoo>
    <record id="view_form_car_extend" model="ir.ui.view">
        <field name="name">add Is Available?</field>
        <field name="model">car.driver</field>
        <field name="inherit_id" ref="car_app.view_form_car" />
        <field name="arch" type="xml">
            <!-- <field name="color" position="after">
                <field name="drivername" />
            </field> -->
            <xpath expr="//field[@name='color']" position="after">
                <field name="is_available"/>
            </xpath>
        </field>
    </record>
</odoo>