YOU SAID:
I would like to purchase a vehicular device please and thank you
INTO JAPANESE
車両デバイスを購入してください、ありがとうございます。
BACK INTO ENGLISH
Thank you for purchasing a vehicle device.
INTO JAPANESE
車載機器をお買い上げいただきありがとうございます。
BACK INTO ENGLISH
Thank you for purchasing an in-vehicle device.
INTO JAPANESE
車載機器をお買い上げいただきありがとうございます。
BACK INTO ENGLISH
Thank you for purchasing an in-vehicle device.
That didn't even make that much sense in English.