I'm a little ashamed to admit it, but I had a Tomica car, pink, with Snoopy in the driver's seat. It was an odd car with an open top. I finally found out what it is.
From 1970 to '73, Honda had a kei truck called the Vamos. It had a 356cc 2 cylinder engine. Its design was certainly unique, but it was not a commercial success. Only about 2,500 were sold.
Here is a video on removing the Vamos's soft top. Once you're on the Honda site, check out the other clips available in the Motion Gallary (sic).