YOU SAID:
Why did you buy a car
INTO JAPANESE
なぜ車を買った
BACK INTO ENGLISH
Why I bought the car
INTO JAPANESE
なぜ私は車を買った
BACK INTO ENGLISH
Why I bought a car
INTO JAPANESE
なぜ私は車を買った
BACK INTO ENGLISH
Why I bought a car
That didn't even make that much sense in English.