How to use Eloquent (from Laravel) inside Wordpress

Car.php

<?php // File location: /wp-content/themes/my-theme/src/Models/

namespace App\Models;

use Illuminate\Database\Eloquent\Model as Eloquent;

class Car extends Eloquent
{
    protected $table = 'cars';
    protected $primaryId = 'id';
}

composer.json

{
  "require": {
    "illuminate/database": "~5.0.0"
  },
  "autoload": {
    "psr-4": {
      "App\\": "wp-content/themes/my-theme/src/"
    }
  },
}

functions.php

<?php // File location: /wp-content/themes/your-theme/

require __DIR__.'/../../../vendor/autoload.php'; // include composer inside Wordpress

/*
 * Configure Eloquent (called Capsule when used alone)
 */
 
$capsule = new \Illuminate\Database\Capsule\Manager;

$capsule->addConnection([
    'driver'    => 'mysql',
    'host'      => 'localhost',
    'database'  => 'database',
    'username'  => 'root',
    'password'  => 'password',
    'charset'   => 'utf8',
    'collation' => 'utf8_unicode_ci',
    'prefix'    => '',
]);

$capsule->setEventDispatcher(new \Illuminate\Events\Dispatcher(new \Illuminate\Container\Container));
$capsule->setAsGlobal();
$capsule->bootEloquent();

// other code in functions.php here

page.php

<?php // File location: /wp-content/themes/my-theme/

$cars = App/Models/Car::all(); ?>

<!-- HTML or PHP code -->

<?php foreach ($cars as $car): ?>
    <h1><?php echo $car->model_name ?></h1>
<?php endforeach; ?>

<!-- HTML or PHP code -->