Trouble is the roads are now stupidly busy into town thanks to the lack of improvements and the number of new houses.
I am unconvinced that this statement is, for the most part, realistic.
Have you tried to drive anywhere else?
Getting into the centre of the town is not really any more difficult than getting to any other part of it, 'retail parks' included.
Ultimately everything is driven not by how you get there but by what you do when you're there.
If you have to drive, you have to park. That is the limiting factor.
Where is the bus stop @ Queens retail park?