This name was bugging me, I thought I knew the word. Yep I did......Umm, why would you name a car after your ankle bone, or a pile of rocks!?!?!?!?!?!?!?!?!?
Wikipedia - 
Talus (which is Latin for ankle-bone) may refer to:
    - The talus bone, a bone connecting the leg to the foot
    - A sloping mass of loose rocks at the base of a cliff
    - Scree, small broken rock found on mountain slopes and at the base of cliffs
    - Talus, in architecture, the slope of an embankment wall, which is thicker at the bottom than at the top, to resist the pressure of the earth behind it.