Some good ol' boys associated with Rock Island Arsenal -- but on the free side of the Missisippi -- are offering The Hawkeye. It's another upgrade of the venerable M119 howitzer, mountable on a light truck.
It has all the smart aiming digitals, but the key seems to be a very soft recoil system friendly to its little ride -- keeps the dirty side down while the three-soldier crew maintains a six-rpm fire rate. It's supposed to make shootin' 'n' scootin' practical.
Geekery Note: Jane's International Defence Review has a more complete take on this thing, but I don't subscribe and can't link directly to the article.