A was talking to a mate who works in R&D for Honda. He said that very few manufacturers were stock piling cars like they used to a few years back. This is bound to effect delivery times as there are very few unsold cars around waiting to be picked off. Virtually every car nowadays is a factory order, so needs to wait it's turn.
Also the raw materials that go into the manufacturing process are going up in price month on month, so that also will have an effect on prices and in turn new car sales.
I think it's going to be a long time untill the car market gets back to somewhere near where is was. Many people just can't be doing with the whole car buying process anymore and holding onto their current cars for longer. It's certainly not an enjoyable process these days. I used to buy a new car every 3 years, but have had my current car for nearly 6. I can see me keeping it at least untill it's 10 years old. It's not as if it's going to loose much more money.