My Intellectually Disabled Autistic Son needs transport

My son is intellectually disabled and autistic, I am his primary carer and as such don't earn a lot of money. Recently the transmission in my 25 year old car died and it has left me with no means to get him around. Without transport to school and other activities his world would completely shut down and destroy him emotionally and mentally. Use of ride share and taxis are not possible due to his condition as he has aggressive meltdowns which makes them unsafe. Means of funding through Government sources have either been met with massive waiting periods or a resounding no. Please help, I can't resign him to a housebound life where the few things that keep him active and engaged are gone, it will destroy him completely.

Thank you.