How do I get from CDG airport to Paris Auserlitz, train station, in a hurry?

Question

Group of 4 adults, carrying baggage etc...

Answer 1

Several companies run shuttle services from CDG which you can book in advance.  Its as fast as a taxi and less expensive.

Here's one such company: http://www.parishuttle.com/reservation.h...

Answer 2

Taxi would be quickest as long as it isn't rush hour.  You can take that RER as well, RER B to Saint-Michel Notre-Dame, changing to RER C to Gare d'Austerlitz.  I wouldn't take the RER if you have a lot of lugguage though as there isn't much place to put it and some stations don't have elevators or escalators.