Kind of an over kill for a two meter antenna. As most bridges are only clearance for 13 ft 6 inches to 14 feet, I would expect that antenna to hit everything going down the road. First bridge it comes to will put a right angle bend in the top part of the whip. Then you have all the tree branches that hang over most streets and roads.
Nice antenna for parking, but on the road not very practical.
Having been a ham for some 50 plus years now and drove over a good part of the country, I find that a simple 1/4 wave whip has provided more than enough antenna. I run an old Motorola Spectra radio with about 75 watts out. By the time I can't hear the repeater, they can't hear me any more.
You have to understand that most repeaters around the country are way unbalanced. They talk out more than they can hear. So it's not uncommon to not be heard even running some power in the car or truck. I use to run a base loaded 5/8 whip on the truck. Found out the whip got bent up more than it was worth taking the time to keep taking the bends out. The longer antenna does give you a little more distance, but the draw backs just don't make it worth while.
