You know, nobody's listening. If you want to brag about getting the best cars and overkilling races, try a different forum, because people here are too serious about the game to treat it simply as something to be beaten. Instead, we prefer to complete races in challenging and unique ways. It seems that you're having a lot of trouble figuring that out.
As an on-topic aside, my first car was the Lotus Carlton, which I bought after doing most of the licenses and missions, which seemed much more manageable and contained than the very open - and therefore somewhat intimidating - wider world of GT Mode. Obviously, back then, I, too, was interested only in annihilating races and completing the game. I guess it's a phase that everyone new to the GT series - plus, evidently, many other people - experiences on their way to more serious and interesting gameplay.