Anyone know of a org. that helps the disabled to get a scooter rack for auto?

MY insurance Company paid for me to get a mobility scooter to become mobile. However I am on a very small fixed income and raising a granddaughter also. I have no money to buy a rack to carry the scooter on the car. Currently I am still not able to go anywhere outside of my home with the scooter .I have been told there is probably a org. out there somewhere that may help me to get a rack for the car. Does anyone know of a org or club who could help me? I did have the Rotary club here in Va. that built me a ramp, but they do not fund racks for cars. Help lead me in the right direction if you can!