I recently had the WEIRDEST and probably coolest auto maintenance experience ever with my Model Y, and thought I'd share it here. I got my MY in September, and from the beginning, I was noticing a weird, chemically, hot-battery smell outside the car when I would drive with the windows open, which would get stronger the longer/faster I drove (and who doesn't drive their new Tesla fast juuuuuusssst a little?). I popped on here, and folks told me that the smell was not normal, and that I should log a service appointment with Tesla, which I promptly did. Well, rather than telling me to come to the service center, they booked a "mobile service appointment," which I then noticed was AT. MY. HOUSE. Okkkkkk. They gave me a 6 hour window when they might come and told me to have the car somewhere outside, which I did. Of course, they came during the one 30 min period that I had to be away from the house, but the technician called me, and said, "Hey, I'm not totally sure what's wrong with your vehicle, so I'm just going to go ahead and replace the battery." Me: "The battery..... you mean, the thing that basically IS the engine? Do you need me to run home for that?" Him: "Nope. I should be done in 10 minutes." And, HE WAS. Total cost = $0. Not entirely sure whether to be freaked out that my car was probably in such imminent danger of exploding that they sent someone to my house with a new battery, or impressed that they could essentially change out the engine in 10 minutes, but either way, I REALLY wish I'd been there to see it now.