Since we are down to one car, he has to do public transportation (I'll be doing kid-schlepping and shopping; Costco runs are pretty much car-only).... Metra commute train, buses, and/or the El (light rail? in any case, a smaller train than the Metra). I'm confining the search to as short a trip as possible, with as short a walk as possible to whatever stop or station he needs. Many people live car-free here... you have big garage fees with the condos, for example, if you have a car. So when I said commute costs, I meant public tranportation.