I have a 3.5 hour layover at Dulles on 4/22/13----I grew up in Reston, & would love to try & catch a cab out to my old neighborhood (Hunters Woods area-Glade Pool) look around & take some pictures. I will have a carry on bag with me---my flight lands at 11:35am & departs at 3p. Is this enough time to catch a cab & get back to the airport? Any thoughts are appreciated. Thanks!