Wheelchair Accessible Van for Tobias

Tobias was born with a very rare gene mutation called ATR-X.  (Roughly 200 in the world!) ATR-X affects many things, one of which is muscle tone.  He just turned 4 years old, but is unable to walk.  We are needing a van that can accommodate his next wheelchair.  His wheelchair should arrive in February and we are hoping to have a van by then. Tobias is one of the happiest kids you will ever meet and we just want to make things more accessible for him. Any help is greatly appreciated!  Thank you for everything!