I get my new car Mid November , this will be my second car on Motability
I don't know if you have been told this , BUT before pick up ,( if it has not changed !!
) you may need to go to your nearest Job Centre to get you DLA payments switched from being paid to you directly , to Motability (they will get your next payment ).
All you need to do is sign a couple of bits of paper
It may pay to call the garage up to see if this needs to be done ( like i said things may have changed ) and as far as i know you do not have to pay anything back to DWP