Location is also a factor. After Heathrow, Luton has the UK's second largest catchment area.
I see trees and bushes are being cleared around the M1 link road and some heavy equipment is already on site.
Not so good is that since the hard shoulder came into use between junction 13 and Junction 10 the painless task of getting onto the M1 in the morning rush hour is over. Long queues on the link road will remain once it is upgraded as the M1 is often at a standstill Southbound.