I saw something the other day that I'd never seen before in my whole life.

And after I saw this, I thought, 'Why haven't I seen this before? And why haven't I noticed that I haven't seen this before?'

In a shop, buying gadgets, and the sales assistant next to me, helping a customer spend money, was in a motorised wheelchair. I have never seen a disabled shop assistant before. Is this a rare thing? 

I've seen plenty of rude ones though.