アメリカ陸軍自走砲は自主開発断念だそうで
自衛隊の99式はそろそろ更新検討されてるんだろうか？

Army launching self-propelled howitzer competition in mid-February, after globetrotting evaluation tour

//breakingdefense.com/2025/01/army-launching-self-propelled-howitzer-competition-in-mid-february-after-globetrotting-evalution-tour/