I took a trip from Long Beach,Ca to Las Vegas,Nv yesterday and came back today. Decided to try one sti on the front lower winshield and one on the rear window. WOW.. Got awesome protection. Picked up a CHP over 4 milles away just before Nevada state line from the front STI and at a mile away the rear picked him up and continued to alert 2miles after I passed him (he was shooting south and I was traveling north). Also had a Nevada highway patrol shooting 33.8 with over 3 miles alert on a flat 2 lane road near Las Vegas. Just wanted to share my excitement on the performance running one front and one for rear coverage.