ok, here's my view... (i'm being blunt, and honest) Top menu nothing to say looks fine... Header image... the logo (text) seems to be a bit out of place, also the header has no separation from content, i would suggest using the full car image (adding a shadow or something similar) and perhaps some sort of a line etc. to define the header more (as it's suppose to be your blog's image) the ads... as much as we all want people clicking them i would attempt to integrate them a little more, an inverted (L) might not be such a good idea, they just look like ads..... i'd suggest you try to add a text unit in your posts... Another thing is the empty bar under the title, if you wanted to have some sort of a separation between title and content, just use white space, the empty gray (box) with icon and nothing in it just doesn't work (ihmo) that's all i can think of atm...
Yea, I would rework the car in the logo, definitely use a full car, not chopped image, and maybe a car that looks like it is drifting and has some motion blur, not a parking lot shot?