Is it ok to book an accessible Uber when I don't need the access?

[MaggieFS]

I've only used Uber twice before, but I'm trying to book one for tomorrow because the useless and unreliable local firm won't even answer the phone. A normal 'Comfort' vehicle will be £8. A wheelchair accessible 'Access' vehicle will be £6.

Can I do this? I don't need it, is it wrong because it makes it unavailable (for ten minutes) from someone who might? I don't want to pay an extra 33%if I don't have to!

Can you ask your Uber driver what the correct protocol is here Op?

I wonder if it's £2 cheaper to incentives people to book them, as too many people don't thinking they need to leave them for wheelchair accessible people?
I can totally understand people who need them being frustrated when none are available due to able bodied people using them, I just can't work out how the economics would work out for the user driver of an accessible car though?