YOU SAID:

With my hair undone In the front seat of his car

INTO JAPANESE

私の髪を元に戻すと彼の車の前部座席に

BACK INTO ENGLISH

Undo my hair and in the front seat of his car

INTO JAPANESE

私の髪を元に戻し、彼の車の前部座席で

BACK INTO ENGLISH

Put my hair back and in the front seat of his car

INTO JAPANESE

私の髪を後ろに向けて彼の車の前部座席に置く

BACK INTO ENGLISH

Put my hair back on the front seat of his car

INTO JAPANESE

私の髪を彼の車の前部座席に戻す

BACK INTO ENGLISH

Return my hair to the front seat of his car

INTO JAPANESE

私の髪を彼の車の前部座席に戻す

BACK INTO ENGLISH

Return my hair to the front seat of his car