OF COURSE almost every commutes to downtown Chicago by transit, because parking costs are insane.
I'm not saying I'm not pro-transit; I am. Very much so. But these stats don't capture how many of the 97% hated commuting by car but had to, and how many of the 90% "non-automobile" commutes are being done by people grudgingly (or AFTER driving a car to a train station, paying for parking, waiting for a train, and wishing they had a nice big free parking lot at their destination).