Make sure the car is sparkling clean then take lots of photos, inside and out. Find a photographer if necessary. Include a pic of the original equipment list. If I were selling it, I'd target the ad to someone who's never owned a Tesla, and add some humor. I recently sold a 1997 BMW 328i with 180K miles on it. I had replaced a lot of stuff in the 11 years I owned it. And I listed that stuff in the Craigslist ad, under the heading of: STUFF YOU WON'T HAVE TO FIX. Most of the items had a funny comment included. With a Tesla, some items I can think of are:
ENGINE: None. It has an electric motor that drives the rear wheels.
TIMING BELT: "Free at last! Free at last! Thank God almighty, I'm free at last" from that awful maintenance item, that can destroy an engine when it breaks. There's no engine, hence no timing belt.
TRANSMISSION: None. No shifting.
LEAKS. There aren't any. The only fluids are water for the windshield spritzer and brake fluid. Power steering fluid? Nope. Steering is electric. You could park it on your living room carpet and not worry about leaks.
BRAKES. Tesla brake pads often last a hundred thousand miles. When you take your foot off the accelerator, the car slows very quickly, down to about 4 mph. Most of the time, all you have to do is use the brake to stop the car from that low speed, instead of from 60 mph.
BATTERY: The "85" designation refers to battery capacity, 85 kilowatt-hours. The bigger this number, the farther it can go before you have to recharge. With this car, around 260 miles.
DOOR HANDLES: When the car locks or drives, the handles retreat flush with the body. When you approach the car with the key fob, to within about three feet of the front doors, the handles pop out. Enjoy freaking people out with that uber-cool trick.
MECHANICAL SERVICE: Tesla would like you to drop by once a year. They will want to know about any problems. Wouldn't it be great to not have to deal with oil changes and engine and transmission repairs and mechanics?
And there are many other things you can say. Write your ad to make the car seem irresistible, like I did with that 22-year-old BMW. It sold for my high asking price. Good luck with your task. Say hi to your boss for me.