Tamiya Racing 64

Tamiya Racing 64 is a tech demo for a racing game (presumably the similarly unreleased Mini Racers) with licensed remote-controlled cars, featuring very sensitive controls and vacuum cleaner engine sounds. It was developed by Intermetrics, associated with Looking Glass Studios.

The cartridge containing this prototype surfaced as an eBay auction in early 2012 and was sold for $1,358. It was dumped and released by Team CARROT on April 5 of that year.