Katie Holmes' carbon footprint just shrank a size after she hopped on the subway in NYC, and blended in with the other metro riders.
We don't see celebs riding the subway often, but Holmes looked just like any other New Yorker minding her own damn business on a train headed uptown. She got lost in a copy of Joan Didion's "Slouching Towards Bethlehem."
Hopefully she didn't miss her stop. Nothing jacks up your day like waking up in Flushing, Queens ... when you were headed for Midtown.