Since I'm researching some trips I'd like to drive the Model S this year, I'd thought I'd share my findings.
In each case I'm looking at round trip from Rocklin/Roseville area to the destination.
Trip1 -- Disneyland (~500 miles one way)
Could be a straight shot to Harris Ranch (~200 miles), supercharge, then Tejon Ranch (~130 miles more), supercharge to top up, over the hill (grapevine) then charge @ Disneyland (~130 miles more) for the few days. I haven't figured out a hotel or anything like that, figure easy charging will make or break some of the hotel choices but the 130 miles to Tejon Ranch supercharger makes the trip much easier than without that particular one.
The other method takes me by my parents for a visit in Clovis (~200 miles). Substitute that for Harris Ranch but there is no supercharger. So I'm having a NEMA 14-50 installed for them. Makes weekend trips possible when a 110V made weekend trips much more difficult.
Trip2 -- McKinleyville/Eureka (~320 miles)
This one is a bit tricky and will require a NEMA at far end as well. This is my wife's parents place. This trip takes advantage of a place off I-5 called Berry Patch restaurant (~120 miles). Berry Patch has "Tesla" chargers, so I think I'll need an adapter for that. And the in-laws recommend a stop there anyhow.
Trip3 -- San Jose (140 miles) ... ok this one is pretty easy. Zip over, charge a bit from w/e I can find there, zip back.
Trip4 -- San Francisco (110 miles) super easy. Don't even need charging.
Wine Country... need a bit of charging, maybe. No big deal.
Really looking forward to the car.