Dumbo has one ADA ride car which opens up on the side for an easier transfer; it is not wheelchair accessible, but the opening on the side makes for an easier transfer. There is a picture in my album showing that ride car. This picture is a 'regular' ride car to show the difference in the side...
The CM is opening the door on the side of the Dumbo car to make the opening wider. A wheelchair can be placed as close as needed to the Dumbo for transfer. It is a bit low, but is a straight in transfer.