? Mobility ?

I suffer with advance osteoarthritis in my knees and spondylitis in my back and depression for years, I've battled years with the dwp and now they have put me on pip I think for 2 years my condition won't inprove hence the advance bit..im on the standard rate would I still qualify for a mobility car, because that's why I won my case because I struggle and allways in pain....and would I have to appeal again ?