The Tesla wouldn't replace the Land Cruiser. I treat vehicles like hammers. You have to have different ones for different purposes. I have the Land Cruiser for recreation and driving my 4 year old son to and from school which happens to be on the way to my office so it is more often than not my daily commuter.
My pickup truck only gets used when I need a pickup truck. I believe I've only put ~500 miles on it in the past 3 years. But it is a single cab 2500 so my son cannot ride in it. Maybe when he's older and out of the carseat.
The Tesla would simply be to haul my son to school and myself to my office. I'm looking at just getting a Prius or a CRV Hybrid now. The Land Cruiser only gets ~10 MPG so that's a bit of an annoyance for me. Getting a steady daily commuter would mean the Land Cruiser can be simply for recreation and longer road trips where we need the storage space.