Mostly it comes down to timing in both how long we've had the car, and for a car to trade it in for.
Most 70D's weren't sold till the middle or end of 2015. So that means people are only now approaching the 3 year mark. Where a lot of people like myself have a resale guarantee. My resale guarantee starts in June, and ends in August. So I have those months to decide what to do.
The Model 3 AWD version is still not available to order. It was supposed to this weekend, but it hasn't happened yet.
But, even if it was it would still be a dilemma
AP2 still has problematic phantom braking events, and it really doesn't do much that AP1 doesn't do. So it wouldn't be a dramatic upgrade.
The HID lights of 2015 with the lighting package is BETTER than the LED ones.
The Next-Gen seats are really nice.
The heated steering wheel is the bomb.
The coil suspension is great.
The battery degradation has been extremely minimal even with 38K miles.
I can probably get around $53K (thereabouts) from a private party, but is that really enough?
I might just keep it since it's been great.
Or I might trade it in for a Model 3 AWD.
I'm pretty skeptical of the CPO program though so I might sell it privately. At least that way the new owner can test drive the car, inspect it, and doesn't spend a ton of extra money for what amounts to hardly any work on Tesla's part. I would still recommend that the buyer gets an extended warranty even though I haven't had any issues with it. The new buyer would have about a year and/or 12K miles to decide.
So as a third answer to your question I'd say that owners are looking to sell privately. I might even go the consignment route.
I do realize it's kinda silly to care so much about car to worry about what happens after I let go of it. I would just feel bad for it to go through the CPO program. It might end up as a service loaner, and that would be horrible.
Lately I've been driving my Jeep. Mostly so I can unbond from the car.