Yes we have!!

My husband had a job thats head office was just outside of Washington D.C. I drove down with the DD's once while he was at a two week training session. We stayed outside Washington as it was unaffordable to find a hotel in the Washington area. DH also wanted to be near his office.
We stayed at a Westin in Tyson's corners in Vienna Virginia. The hotel shuttle would drop the DD's and I off at the train station and pick us up every night if DH could not. DH used the car while we were there. I also would never have driven in Washington!!!
The drive is very nice. There is the scenic route and then the interstate only route. We took the scenic route there as DH was with me in the car. It took us 10 hours with only stops for gas/bathroom/snacks.
On the way home I was alone with the DD's so I took the interstate route. Very easy....I did not even get lost.....and I can get lost in a shoebox

It took just over 8 hours. Only stopped for gas/bathroom/snacks.
We had a great time. The museums are beautiful, the zoo is great and just being there was incredible.