The 'bait' is in you writing the blog here on the forums in the first instance. When people search for things, and if you've written a good article with good keywords*, the search engines will pick it up. They click, come here, read your article and think 'hey, great article, what a knowlegable guy... who is he? Oh, there's his signature link... <*click*>
That's how proper
article marketing works. Littering an article for SEO
with links is spammy and anyone reading it will just think you're desperate and they'll 'set to ignore'!
You should write articles for inclusion on your own site
of course but also write 'guest' articles on places like here which have greater 'Page Rank' than your site does. The search engines like to see links from external sources as it gives your site so-called authorotative 'weight' (apparently).
That said, with a Full Membership
here, you have your own blog space where you can link away to your heart's content (but see advice above).
Feel free to write articles here - your subject matter expertise alone will 'sell' you.
*write naturally [for a human] and good keywords will happen naturally.
[edit: Doesn't have to be full blow articles either - consider maybe posting a few driving tips or start a discussion on a topical motoring subject in our motoring forum?