Mr Wayne, having read a few of your posts today I have managed to gain a feel for your opinion on car sales - you think new cars are too expensive and service from sales executives is wothless!
I thought, as an ex-car sales executive, I would provide a response. Firstly, new cars are far from expensive, in fact how you can even consider that somewhat surprises me. Today, there are great cars for all budgets - Ford will sell you a new car from £5,500 for example. There are also great cars for all types of people - BMW will sell you a coupe/MPV for example, and there are cars for people who want great fuel economy - 70mpg for example. In short, there is massive choice, for all budgets and for all types of customer. Plus, cars are safer, kinder to the environment (and your back pocket) and actually cheaper than 15 years ago (I think Auto Express calculated cars are around 25% less now). And if you look at the finance deals, you can be driving a brand new, safe car, for around £30 a week with a tiny deposit. Cars are not expensive, although I except your point that some variants don't offer the same value for money as others.
Regarding sales executives - once again there are going to be some really bad ones, but there are also loads of really good ones who just want to get on and sell. The problem is that there is no money in new car sales, that means you will struggle to find people who are happy to work 55 hours a week for £15K! Therefore you end up having to employ those that really don't care about their earnings or those for which a company car is the attraction. Sadly, those that were good at selling and offered good service are dying away.
If car prices come down again then so will the value of part exchanges - you won't be any better off unless you don't have a car to trade out of.
Out of curiosity, how much do you think a typical small family car, like a Focus or Golf should sell for in order for you to think they are not expensive?