YOU SAID:
The cats were riding on the late bus.
INTO JAPANESE
猫たちは遅れたバスに乗っていました。
BACK INTO ENGLISH
The cats were on a delayed bus.
INTO JAPANESE
猫たちは遅れたバスに乗っていました。
BACK INTO ENGLISH
The cats were on a delayed bus.
That didn't even make that much sense in English.