Carwale.com

We have built the model on the lines of autoweb/autobytel (and numerous others worldwide). Though I respect what they have done and created the revolution in automotive trading, I'm sure this revolution has a long way to go.

A real intermediary (info/ service cybermediary) shold be able to match the best available vehicle for a user at a given point. So in acse of used cars, the internediary will take customer prefernces (exhaustive) as inputs and will compare all possible vehicles available, including the cost of acquiring those given the time & place of delivery , and will deliver the best match possible.

Next it will recommend the best possible match for associated transactions like Finance/ Insurance/ Accessories and Service, therefore making the transaction complete. At the end, customer will get the BEST possible deal.

If I stretch the model further it should be possible to recommend the user that given his prefernces, what advantage/ losses s/he stand to gain if the buying decision is delayed by a time period.

I happen to read about Riya.com, I think it's generation 2 of photos.com. This is I think is applicable to so many existing business models, including google.