I highly suggest that you just put the URL of your carfinder ad here... Like so:

http://tsikot.yehey.com/auto-classif...p?product=3696

Or put it in your signature.

Posters can put questions / queries in there and you can answer there too. You can also update it to include the schedules that you are mentioning.

If you want a dedicated thread / banner ad for your product... it is available for a small fee. Kindly coordinate with our admins for this.