So much for independence!

I have just received the outcome of my claim for PIP and I have been awarded the lower rate of the carers part, but have been refused the mobility part. Well when on DLA I was awarded both at the higher rate. This is such a frightening outcome for me, and whats more what is the independence part of PIP supposed to be if not for transport. I now have to give the car back to motability which has taken away my independence this is really stupid. I am going to fight this but fear that because I am cognitive in the mind, can read and write and in other words have my sanity in their eyes I am capable of doing anything. I have osteoarthritis in all my body, I am diabetic, and I cannot walk more than 3 yards without getting out of breath and being in severe pain. I also have asthma among a lot of other problems. I am on morphine patches and several other medications to help me. Now the thing here is I am registered disabled, but according to the powers that be I can manage. I have carers who come in everyday to help me dress, shower etc, what part of that makes me an abled bodied person I ask you? I am so scared and worried about how I will managed now without the extra help. Does anybody else feel that the PIP is really unfair in its outcomes? Like I said what is the independence part for if not to give you the independence to live your life. Gosh I am sorry for the long message here, but I need guidance please. Thank you.