The system will send audible and visual alerts at first in an attempt to get your attention back, and can eventually "apply the brakes on its own" if the previous warnings prove futile.

ENGADGET: Lexus LS600hL's face detection camera, warning system get spied

Create your own Vertical Reality at Vail's three terrain parks or get a Black Diamond Rush on the back bowls, before breaking for lunch and hot chocolate at Two Elk.

BBC: Daily deal: Three nights in Vail, Colorado