So, I have put some thought into this since you first posted.. What characteristics does my wife have in common with a vehicle?? There are a lot of jokes and puns I have thought of, but I began to think deeper..
She is way too reliable to even consider being a Ford, or Dodge product...
She can handle just about anything I ask of her, and bears the load very well, so she is way too tough to be a Tacoma or similar half sized truck...
She is not flashy or common, so that takes away about every Jeep option..
She is much too conservative to pay any kind of Toyota price tag premium.. so count out land cruisers (also rover, rangers, lexus, etc)
She is welcoming of every body, and always has room for more.. So a many passenger vehicle would be fitting..
She is (at my own fault) very under appreciated.. so a van comes to mind.. But she is way to protective to be an astrovan..
I think if I mix it all together, I think she would have to be a Dually Van...
Then I googled, and found this: