The front wheel driver Kaiser(s) did exist. Tom McCahill of Mechanix Illustrated drove one and wasn't impressed. For many years, a scrap yard existed in Canton, Michigan near where Michigan Ave and I-275 now intersect and that's where many a prototype from several manufacturers ended up after their usefulness had waned. In the late 70s I stopped at the yard and inquired about any KFs and was able to pull a few bits from some really rusty relics. The yard owner told me that KF sent several cars to his yard over the years and remembered some of the early ones but couldn't confirm that the K85 ended up there.
At this point in time the only two prototypes I am aware of that still exist are the AMP car (American Metal Products) Henry J prototype and a Willys Motors FC170 that was constructed by A.O. Smith. The former is in a museum in Auburn, Indiana (NATMUS) and the latter was rescued...and driven out...of a junkyard in Wisconsin. It's in a private collection and runs and drives.