I'm planning to go to this, and I sent you an email. I'm glad someone is organizing another meetup in Baltimore itself. I moved here recently and assumed I could just go to D.C. meetups, but I haven't made it to one yet since an hour of driving plus figuring out how to park in D.C. just makes it too inconvenient (and meeting new friends who live an hour away isn't helpful..).
I can't help with the duration of your time in transit, but a lot of people will drive to a Metro station, park there, and then take Metro into DC. Seems to be the most convenient option to me, but I don't own a car, so take this with a grain of salt.
Discussion article for the meetup : Baltimore Area Meetup
WHEN: 03 January 2016 02:00:00PM (-0500)
WHERE: 1852 Reisterstown Rd, Pikesville, MD 21208
Meeting at the Panera Bread in Pikesville. We'll try to meet towards the corner away from the parking lot and to your left as you enter. If you prefer a different time or place please contact me. I'd also appreciate it if you could contact me if you are planning to come.
Meetup time & place are subject to change, so make sure to check back here before you come.
My contact info:
Discussion article for the meetup : Baltimore Area Meetup