Well, having two white 4Runners and one white Toyota van, our family decided it was time to name the vehicles. I couldn't say, lets drive the white Toyota, or the white Toyota 4Runner. So, my son named the 4Runners.
The 2001 is the "Old Mule" Because it is ready to go and has been everywhere.
The 2004 is the "Beast". Because according to my son, it is much bigger and powerful and to him is too much to drive.
The 1991 White Toyota Previa mini-van is called the "Previa", not too much imagination on this one.
Picture of 2001 4Runner in New Foundland.