If you wait for Tesla's next tech, you will always be waiting. Also, while it has been better lately, Musk has a history of being overly optimistic with timelines.
I bought a June 2013 p85+ used in January 2016. No autopilot, no cameras, no parking sensors. And it has been the best vehicle I have ever owned. I originally planned to get a new model s at some point and hoped to add a roadster 2 to thr garage. Then I saw the cybertruck and decided to change the future model s for a cybertruck instead.
Recently I decided to order a base model y to replace my 2013 model s and use the Y until my truck is ready. That's an extra vehicle purchase added just because I'd like a newer tesla and the stock has done well enough I am fine if I need more funds, though I intend to keep all my shares and have a car payment again.
As my portfolio has grown, but I'm reluctant to take money out due to expected future growth, the question I am trying to sort: how to balance enjoying life as I go while also being prudent with my investments for the future.
Depending on your situation, would replacing the murano now with a model y add enough quality to your life to justify the expense? Obviously only you can answer that. I think it's a question worth asking.