My mum has PD approx 15st and 86 years old. I have been unable to take my mum out since she started needing the stand aid for transfer due to the wide door threshold of my car, she is unable to get her bottom far enough back into to seat whilst holding the stand aid to steady her. Has anyone else had this problem? Or do you know of a smallish car with a narrow door threshold. I have a dacia sandero at present.