DM had her BB last week, so it's all a bit of a novelty for her.
I took her out for lunch in our local village yeaterday.
I had the choice of 2 spaces out of about 24 road spaces near the restaraut.
One disabled spot and one normal spot - wide enough, so no worries about her getting out the car with her stick.
I'll grab that one, says I, caring daughter, as it's nearer the restaurant.
No, says she, we must park in the Disabled Bay up there.
Butbutbut, this one is nearer, so better for you, less far to walk. 
Nonononono, we have to aprk in the Disabled Bays to leave more spaces for those without BBs.
WHAT?
[perplexed]