Comment Check the Volvo XC60 (Score 1) 859
This car is a marvel of safety technology, including the system that automatically emergency brakes the car and will avoid a rear ender in speeds up to ~25kph. And at higher speeds it'll still brake in order to reduce the impact.
Adding to this, systems such as the BLIS (blind spot information system or something like that), it's a pretty impressive feat of engineering - if you can afford it!
According to my bro who's put an order for the 2010 model, the test version he tried also alerted him to proximity to the car in front when driving at higher speeds.
For me personally I'm quite intrigued by laser cruise control systems... that would be of huge benefit to me.