shadecorp , you need your wheels , but where you live ain't making it easy..!
EAST LA......Eeeek..! If I lived closer , I would no doubt drive you , but you need your freedom , wheels.! Call your son and do what ever is necessary..!
Be the model of responsibility and only you know to drive or not to drive..!
Look into low cost trans. ! There are many programs to aid the elderly.!
Seek out this help , they are out there.! I know they exist. A few years ago , I had to set my Mother-in-Law up with such a program..!
Good Luck , you ain't done till the fat Lady sings and I don't see no Fat Lady..!