Thanks for the many logos #143, #144, #145 is a nice simple design - I like them all - I think #145 gets my vote of the 3.
and you are right if you remove the car - it would look too similar to others posted prior to yours.
your #148 design against the black background is nice.
#149 is good too - but I have to say that the series looks more like a camera rather than a G. I think your intent was to try to encapsulate both Gi and camera together?