With gas over $4/gal, Seggie is looking mighty attractive

I've been using my Segway to commute to work again and I love it as usual. Thinking of keeping it. Not sure. Right now the commute is 2.5 miles but my new residence is going to be in Ballston and it will be a 6.5 mile commute to work near Georgetown... I was thinking that I couldn't commute with the Segway because the Custis trail doesn't allow motorized things, but Google Maps showed me a nice residential-streets-with-sidewalks map that looks quite doable.

I'm not too concerned about the ability of the Segway to handle 13 miles in a day; one full charge nets me 18-20 miles depending on how taxing I am on the machine (i.e. do I constantly push up against the speed limiter? am I going up a lot of hills? am I transporting a lot of crap? etc.)... It's just that I generally don't like going more than 5 miles or so at a time because my legs get a little tired. But with the cost of gas (and parking) what it is...