Back to the original topic,
I bought the Clipper Creek 20a EVSE. Put my own plug, made an extension cord, ect.
Drove to the parents house last weekend. 104 miles each way, so did the extended charge
Plugged into the dryer outlet, 9 hour charge to full. No issues. Charged while I slept.
I think this is nearly ideal as a portable charger for $495. I probably could build my own, but didn't want to go through the effort. I think the only time I'd need this is on overnights to family/friend's homes that would not have easily accessible 240v power at more than 30a.
Still waiting for Chademo