Tax-Vehicles

$tax_vehicles = array(
	'relation' => 'AND',
	array(
		'taxonomy'         => 'vehicle-type',
		'terms'            => array( 'sedan', 'suv' ),
		'field'            => 'slug',
		'operator'         => 'IN',
		'include_children' => true,
	),
	array(
		'taxonomy'         => 'vehicle-class',
		'terms'            => array( 'luxury', 'economy' ),
		'field'            => 'slug',
		'operator'         => 'IN',
		'include_children' => true,
	),
	array(
		'taxonomy'         => 'vehicle-passengers',
		'terms'            => array( '6', '7' ),
		'field'            => 'slug',
		'operator'         => 'IN',
		'include_children' => true,
	),
);