Super Rare Vintage Nikko‎ Squirt Car and Remote Control RC *not working *

Super Rare Vintage Nikko Squirt Car and Remote Control RC True Collector's Find. I haven't found these up for sale outside of Europe. I emailed Nikko asking for any information on them, including a manual... Unfortunately, it's such an obscure item they made, they have nothing to offer. Remote takes 9 volt battery. Car takes 4AA Unfortunately, I added batteries to test this and it did not work. Perhaps it could be repaired. Perhaps it could be a wonderful display.