You're welcome. I considered the same thing, didn't buy it initially and then changed my mind a few days later.. Figured I'd rather do it all at once and get it over with. It's great for starting my car from my office or from inside a restaurant, etc.. I also typically just use my key FOB in the mornings to start my car in my driveway. Best guess is my range is around 60 feet or so. Read about a neat trick where sticking the fob to the underside of your chin will help amplify the range - actually works! Something about the water in your head acting as a conductor to boost the signal.
So the antenna is roughly 5 or 6 inches long. I mounted it horizontally on the windshield, drivers side dead center next to the rear-view mirror.. Honestly because of the way the headliner curves in the front, I can barely see it. If it were mounted on the passenger side of the mirror, you'd forget it was even there. It cant be seen from the outside of the car FYI in case that was a concern. The smoked area on the windshield hides it completely from view.