"Cars" and "Backpacks"

Well, I think it is official... I have a Chicago accent.  It only took me this long to realize that I have picked up an accent.   I will be attempting to get rid of the accent starting today.  The only problem is, how do I begin?!  I can't practice with Chris- he has one too, how will we know when we are saying the accent?   A few word differences, I have noticed... in Dallas it is "soda," not "pop"!   Also, we get a "taxi" here, not a "cab".  "Y'all" not "you guys".   Please help me if you hear my Chicago accent coming through.  I would like for Elliott to grow up with a mommy without any accent!