I had a full-size Ford super crew cab 4X 4 that I was having trouble climbing in and out of. I carried a stool to help climb in. (I used my cane to grab and pull up the stool.) My life grow and Oldsmobile which I had trouble getting out of (not to even mention her Miata which was like climbing out of a hole.) I traded for a Ford Flex as it had adjustable seats and all the features so I can carry my scooter in it.
Soon after that, my wife said my reaction time was getting too slow and she felt I needed to allow her to drive me. I agreed.
Shortly after that I had my respiratory failure and now the Flex, (and Miata) sits idly by while I ride in a wheelchair lift handicap Van.
If you're having trouble turning the key, or getting in and out, or quickly applying the brakes, then it is time to pass over the driving to others. It is not safe for you or those around you, or the innocent bystanders for you to drive under limited abilities. We often look 90 year old drivers and remark how they should not be driving. It is no different for a diminished capacity ALS driver than for an overaged driver. If you are having difficulties, it is time to stop. It is better to surrender your independence and to risk harm to yourself and others.