Well Luton will be getting a multi-story car park soon.
I see the airport is using its tried and trusted method of car park construction for the new staff car park by the side of the car hire centre. Very little tarmac and a great deal of crushed stone parking bays. Give it a few months for the potholes to arrive just like the midterm car park and parts of the short term car park.
This new car park replaces part of the southern staff car park that closes at the end of the month.