We've seen a lot of concept cars before, most of them rather futuristic, some bordering on the absurd. One of the concepts that Toyota just revealed at the Specialty Equipment Market Association, or SEMA, show stands somewhere in between and definitely takes the cake. It's a Tundra pickup truck. It's a limosine. No, it's a Tundrasine pickup limosine. Takings its Tundra model to new lengths, literally, Toyota's idea is to offer the versatility and power of a pickup with the luxury and comfort of a limosine.