The best location I've seen yet is South Hill, VA. Literally in 30 to 60 seconds, consistently, you can be from the highway to the charger spot.
Burlington you have to go through circles and several lights, dodge a bunch of pedestrians, etc to get from I-40 to the chargers. You can slip around the back past Hobby Lobby and such if you're coming from the right direction, but that doesn't seem to save much time due to the annoying speed bumps on that route.
Woodbridge is the worst (if you don't count Bethesda). It took me 30 minutes to get from I-95 to the charger and 20 minutes to get back to I-95 from the charger before. I try to avoid it, even if it means a 100% charge at Newark of Glen Allen.
This Asheville location may actually be quicker to get to from I-40 than Burlington depending on where they put the stalls given that the mall lot is so close to I-26.
In any case, it'll be welcome. It'll make a shot up towards I-70 possible using just superchargers from my house. Currently it takes a stop at a CHAdeMO or RV park for a few hours to make the hop.