At 2,550 pounds, Mandus claims the Hawkeye is the world's lightest self-propelled howitzer.
With no ammunition and crew carrying ability. It requires another vehicle to carry ammo/crew. The current 119A3 carries 22 rounds and enough crew to emplace, displace, and fire it on its prime mover. I don't buy that weight either-example, 2018 Honda Civic weighs 2849 pounds-
That said, I like the concept for its mobility, but how it would be used remains to be seen. I'm sure we can all toss ideas at it(I have a few), but coherent and army wide employment is a big question mark.