Does anyone know if there is a problem with downshifting to 3rd, 2nd, or even 1st gear on automatic transmission while driving? What about shifting to neutral while driving?

fail

you will ruin your transmission. and its epic failz

http://i554.photobucket.com/albums/jj413/Kilrathi827/Motivational%20Posters/EpicFailMP.png

problems? yes...

got an owner's manual? you should read it...