A briefcase left behind in an open MG-F roadster should be an easy target for thieves. But an alarm sounds instantly if a hand reaches inside to snatch it. Rover's new sports car is protected by microwave Doppler radar that fills the cockpit with radio-frequency (RF) signals even with the top down. Developer Lucas Automotive claims that RF interior sensing has big advantages over ultrasonics, now commonly used.
展开▼
