Hi!
If I understand you correctly this should do it
<?php
//Loops through the repeater
while (have_rows('favorite_cars')) {
the_row();
//fetches the post object field. Assumes this is a single value, if they can select more than one you have to do a foreach loop here like the one in the example above
$car_object = get_sub_field('select_car');
if($car_object){
//Fetch the image field from the carsandtrucks post
$image = get_field('main_image', $car_object->ID);
}
//Echo out the image with the medium size. Change this as you like!
echo '<img src="' . $image['sizes']['medium'] . '" width="' . $image['sizes']['medium-width'] . '" height="' . $image['sizes']['medium-height'] . '" alt="' . $image['alt'] . '" />';
}
?>
