packages/CarSystemUI/res/values/config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2018 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License
  -->
<resources>
    <string name="config_statusBarComponent" translatable="false">
        com.android.systemui.statusbar.car.CarStatusBar
    </string>
    <string name="config_systemUIFactoryComponent" translatable="false">
        com.android.systemui.CarSystemUIFactory
    </string>

    <bool name="config_enableFullscreenUserSwitcher">true</bool>

    <!-- configure which system ui bars should be displayed -->
    <bool name="config_enableLeftNavigationBar">false</bool>
    <bool name="config_enableRightNavigationBar">false</bool>
    <bool name="config_enableBottomNavigationBar">true</bool>

    <!-- Whether heads-up notifications should be shown when shade is open. -->
    <bool name="config_enableHeadsUpNotificationWhenNotificationShadeOpen">true</bool>

    <bool name="config_hideNavWhenKeyguardBouncerShown">true</bool>
    <bool name="config_enablePersistentDockedActivity">false</bool>
    <string name="config_persistentDockedActivityIntentUri" translatable="false"></string>

    <!-- How many icons may be shown at once in the system bar. Includes any
         slots that may be reused for things like IME control. -->
    <integer name="config_maxNotificationIcons">0</integer>

</resources>