As I have my 12yo DS 24/7 with him not in school, the only break I get is from 11ish today when my mam will have him and DH picks him up on the way in from work.
Anyway DS can't/won't wear clothes so I can't defrost the car with him in it, he is also coughing and barking, suffers recurrent silent pneumonia and has a heart condition. I can't defrost the car leaving him indoors alone as he has no sense of danger and needs constant supervision.
DH said he would come home in his half an hour dinner to take him, which means he misses his dinner. DH is diabetic.
DH has since took the car to work and the wheelchair is in the car, so can't even attempt a bus journey which may not have happened given DS's refusal of many things.
Could you keep something like this in the car permanently? With holes cut in for his seatbelt like a buggy cosytoes. Perhaps with velcro closures instead of zip (quicker) and initially just as a seat cover, then gradually working towards closing it.