I inquired about a new car a couple of years ago and the salesperson is still calling myself on a regular basis, nothing annoying but correctly attempting to build a pipeline of prospects
It sounds like s/he should read Tom Hopkins's book and learn about the "itch cycle". The salesperson should find out how often customers buy a new car (when they get the "itch" to have something new and need to scratch it) then start calling them a few months before the itch needs to be scratched.
So, if s/he found out you changed your car roughly every four years, they should be contacting you after 3 years, and keeping you up to date with the latest models, inviting in for a test drive, etc.
Most industries these days have gone totally over to a softly softly approach, too far IMO, but I'm getting old and still believe almost anything can be sold there and then to most people. The skill comes in knowing how hard to push, or in todays language, nudge potential buyers into a decision, when required. That said, I prefer to get a client to buy, rather than be sold.
I guess a lot of the softly softly approach is down to the internet. It is far too easy for people to check out lots of suppliers in a very short time. Therefore, if you come over as too aggressive the prospective buyer can easily find another 10, 50, 100 suppliers offering the same thing.
Nobody likes to be sold anything, and generally as a salesperson your job is not to sell a product or service, it is to show how that product or service will solve the customer's problem. Or, at the very least give them ways they can rationalise the purchase (especially on a high priced item). However, it's not always that easy.
So, for example, I am in the situation where I sell exactly the same type of items as a hundred other office supplies firms. A pack of Xerox paper is a pack of Xerox paper, a paperclip is a paperclip. Therefore, I cannot make out that my products are any fancier or cleverer than anyone else's. So why should anyone start buying from me instead of who is currently supplying them? I have to find other ways to differentiate myself from my competitors (and I do this through my "Personal Shopper for Office Supplies" service.)