Well, i did consider this before taking on the project, i was going to buy two and mount one in the rear, or even 4 ... one on each face of the car.... and make a panel with just 4 LED lights in the shape of arrows to show which side of the car the radar is being detected from...
but when i took apart the radar detector unit, it was amazing to see how they make it a 3D detector... they have a peice of clear plastic that "directs" the radar to the front detection unit... litterally a peice of plastic that goes from the back of the detector to the front... i think they were aiming for a fiber optics affect..... so that didnt have me too concerened about missing the rear detection
and as for mounting 4 of them...it was too much money, and it worked well enough with the one in the front
