An interesting innovation by Toyota. Not only does the new Lexus GS 450 check for cars ahead, it will engage the brakes faster based on whether or not the driver is looking forward? Sounds risky to me.
Chron.com | Toyota Launches Rear-Wheel Drive Hybrid
Adding to the glamour is an advanced safety feature, billed by Toyota as another world first, that not only uses sensors to detect cars ahead but also uses a camera on the steering wheel to judge whether the driver is facing the front or not. If the driver is looking away, the emergency brakes kick in faster in a potential crash situation.