YOU SAID:

When I woke up, I was riding in a flower carriage

INTO JAPANESE

目が覚めると花車に乗っていた

BACK INTO ENGLISH

When I woke up, I was riding on a float

INTO JAPANESE

目が覚めると、私は山車に乗っていた

BACK INTO ENGLISH

When I woke up, I was on a float.

INTO JAPANESE

目が覚めると、私はフロートに乗っていました。

BACK INTO ENGLISH

When I woke up, I was on a float.