This is how we go anywhere and everywhere. It's actually not as bad as it may look. I think I maneuver better than some do with one, not that it's attributed to my strength or anything. I just have the lightest car seats on the market and the sweet boys inside make the travels fly by (most of the time anyway!).
*Disclaimer: Carrying two babies in the above noted fashion MAY stop any of the following, including, but not limited to, Target shoppers, small children, old women, power lifters and/or pretty much ANYBODY (except other twin moms). : )