Just post at some forums and post as social bookmark and you will be fine, you will grow up time to time.
Since your niche is very competitive you should focus your articles on less competitive long tail keywords, in this way your blog will rank well for those keywords.
ok dear just wait and give the backlinks once your site is gettting traffic, then automatically you will get the good traffic.......
As mentioned before, optimize the page with SEO, use a bookmarking tool such as Onlywire, and then you can use article marketing with Ezine articles. There are other ways to drive traffic but this should be the starting points. Good luck
If you submit articles to ezine, do they have to be fresh content, or can you submit blog posts that you have made?
do social bookmarking and put more related pictures. i also started a car blog 1 and 1/2 month before, now im getting more than 100 visits per day. im getting 80% traffic from google image results