car-ui-lib/referencedesign/plugin/src/main/res/layout/toolbar_overflow_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="116dp"
    android:orientation="vertical"
    android:gravity="center_vertical"
    android:background="?android:attr/selectableItemBackground">

    <TextView
        android:id="@+id/toolbar_overflow_item_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingStart="24dp"
        android:paddingEnd="24dp"
        android:textAlignment="viewStart"
        android:textSize="32sp"
        android:textAppearance="@android:style/TextAppearance.Material.Body1"/>
</LinearLayout>