Last car question.

My friend told me he's planning to fix up his car. A few hours or days later he wants to show me his new fixed up car. Which is way too soon considering it's a lot of work.

So then I asked him: Thought you hadn't fixed up your car yet? Or Should it be thought you haven't fixed up your car yet.

To which he tells me the Auto mechanics had photoshopped an image of what his car will look like after it's completely modified.