Yup, I stoled it

But I think it's wildly interesting.  So, from the MARTA facebook page, what the heck that logo means:

MARTA’s 3-color scheme of Orange, Yellow and Blue acknowledged Atlanta’s transit history. The Georgia Railway and Power Co. (formed in 1902) owned blue and yellow buses. After the transit strike of 1950, the Atlanta Transit Company took over operations and they owned orange buses.

I love it, and think it's perfect.