on the Hunt for a 4runner trophy...

[Martinjmpr]

I haven't found it specifically, but can the HighLander be driven 4wd all the time? even on dry surfaces?

The Highlander is an AWD crossover so it is always in 4wd/AWD. I don't even think you can lock the 4wd on the newer ones although I believe you could on some of the older models.