Everyone asks questions about the Model S. No one asks these. They should.

1. How much does it cost to wire a high power wall charger?
   Depends on how far your car is from the main electrical feed. If both are near each other, a few hundred dollars. If your car is >200ft from the electrical feed, well…try $2,000–$5,000. Copper is expensive.
2. Can you lock the frunk?
   Yes. But only when the entire car is locked. You can't "valet lock" the frunk. IOW, all storage areas in the car are accessible if you have the key. You can't even lock the glove compartment.
3. Is it safe to valet park?
   Maybe, if you have a smart valet. Otherwise, they might leave the key in the car, and when the door handles retract, you have to hope the car doesn't lock itself. You probably want to turn OFF "walkaway locking" if you use a valet.
4. Do the displays ever crash?
   Yes. Once in a while the touchscreen hangs, or doesn't correctly work. After the last software update the car wouldn't stop beeping for me to put on my seatbelt, even though it was on. Fix: reboot the appropriate screen, by holding down both scroll wheels on the steering wheel for about 10 secs for the touchscreen, or holding down the two top buttons on the steering wheel to reboot the dashboard display.
5. With the regenerative brakes, how does braking work?
   You almost never touch the brake pedal; the regen brakes do all the work of slowing down the car. You learn to change your driving style to use that feature optimally. The brake lights will automatically light when the regen brakes engage, to warn drivers behind.
6. Is there an alarm system?
   Not really. The new software update 4.2 enables the car horn to sound if someone tries to open the car without a key.
7. Is there a voice command system?
   With software update 4.2, yes. It's limited to dialing, playing music, and navigation. But that's enough.
8. Can you play music from an iPhone or iPod?
   Yes, but it's still dumb: IOW, for reasons best explained by Apple I suppose, you must control the music selection from the iPhone or iPod, not from the touchscreen. Also, the iPhone volume needs to be full up.
9. Can you close the hatch from inside the car?
   Yes. Thank goodness. But not from the key.
10. Can you raise/lower the windows from the key?
    Lower, but not raise. This seems backward to me. IOW, you can open the windows as you approach the car, perhaps to ventilate it. But you can't close the windows from the key as you are walking away.
11. Do the windows work when the car is off?
    Trick question. If you are sitting inside, the car is never off unless you specifically turn it off. So normally, yes, the windows work while sitting in park.
12. Do the mirrors dim at night?
    Yes, but you have no control over it. It's fully automatic.
13. Can I use my old keychain? Can I use the Tesla keychain I got from the showroom?
    No. No! The key is shaped such that no chain, keyring, or other normal attachment will fit it. Duh! You need to use something with a flexible string. Good luck with that one.
14. Who pays for the cellular 3G link?
    Tesla, at least for the first year. Or at least for Signature owners for the first year. After that, who knows?
15. How do you change the windshield wipers?
    Good question. I have no idea.