I give you the Type 762 rocket launcher, a fairly old and obscure Chinese self-propelled artillery piece. This is well, if you combined a FROG, a TOS-1, and a Giant Viper all into one platform, you’d get this.
From its stated (as always, take with a grain of salt) statistics, it has a pair of very short range (around only a kilometer!) thermobaric rockets (like the TOS-1), that are huge at 425mm diameter (only somewhat thinner than the FROGs) and which are primarily meant for clearing minefields (like the Giant Viper). Although with a rocket that big, I’m guessing that it’ll “clear” more than just land mines in the area it hits.
Truly an oddball.