Posted by TimonOf course, would be for free
Not something I would pay for.
Posted by tizianiThanks for the answer, but the website would be for free, at least the main feature as described above.
No, it's only a good business if you have some car dealerships willing to pay you to do it, in which case you'd really just be working for them and no point setting up your own company. That's my guess.
If you're using yourself as the "ideal customer" for your idea then I'd ask: When you didn't find the answer you wanted - what did you do? Did you go out and spend money on a test because you absolutely needed an answer all at costs? or did you give up and just it all aside?
If it's the latter then that should tell you what kind of user you're likely to attract to your site with this idea. People looking for information but no real desire to hand over money on this service alone.
Posted by nanobotMy website would be the starter and the main difference between my service and the user google it by himself, would be the direction.
No, this idea is unoriginal. Anyone can research on google and get the same/better result through professional sites or talking with others about experiences on dedicated forums. What makes your site/decision tree not "superficial" as you call it, and so insightful that people should make the decision listed on your tree? Also, I don't know how many people make an important life decision by consulting with online quizzes/decision trees.