> Leaving work at 5:30 can easily cost you 2 hours in your car.

Woah yeah that changes the calculations, I had a similar situation before, andof course I preferred the subway by far. But you know, it depends. I work late into the evening and when getting out of the office, the streets are empty. So it's a hard sell for me to use a transport option that will cost me 1 hour of my already short free time before bed. But everyone's situation is different, that's why I am in favor of keeping all options open.