As mentioned previously, I feel guilty taking home food in styrofoam containers.

So... went to Stanley Restaurant in Delta (Vietnamese food), ordered some teriyaki chicken on rice (I don't like pho) to go and produced a glass bowl for the order. Bowl was taken, filled with food, given back without question.

Will you be laughed at for keeping tupperware (plastic containers) in your car or your bag for when you go out to eat with friends?

Well, maybe it's worth the social hit.  The guilt that I feel when I take home food in a styrofoam container is really starting to get to me.  While handing a restaurant a plastic container for take-out orders might not be feasible, it really isn't too far-fetched to bring one for leftovers.