I'm in D.C. for business on Saturday and have the morning free (until 1 pm if I push it). I'd like to check out the Udvar-Hazy museum, but have figured out that even catching the first shuttle from the National Mall is only going to allow me about an hour there before I need to get back on the shuttle.

So, here's my question for those familiar with the D.C. area: is a taxi going to get me there (or back) more quickly? (NASM site says to allow 45-60 minutes for the shuttle.) How much is the fare going to be from my hotel, near Dupont Circle, to Udvar-Hazy?

Thanks in advance for your help!