The Company A.P.E. (Allied Pacific Engineering) I believe went belly up in the late 1970's or early 80's after Honda introduced the 3 wheeler. That event pretty much killed the 3 wheel go-cart market at the time. I remember seeing an ad in a 1970 Cycle magazine my Dad kept in the bathroom. I never saw one up close as they were out of California. Then I was driving through a small town in Iowa one day and saw one in pieces at a garage sale. I bought it and restored it. There were a few models made. "Tracker" "Springer" and they offered a Briggs engine or a McCullough at one time. There was also an optional SKI insert that replaced the front tire. I am not sure how well that would have worked. Cool Idea though. Some had roll bars, slip differentials, etc... Mine has the roll cage, a ball joint flexible frame, and just looks cool.
I will probably end up selling mine here soon if you know of anyone.
Thanks,
Mike