Ages ago I established the likely link between the Otaki Monster car kit and the Project SWORD Probe Force 3. The origin of them all is the Green Monster car, famous in US rocket car history. Here's a short film courtesy of You Tube.
Now here's some footage of the Otaki Monster Car kit from Japan also courtesy of You Tube.
And finally a You Tube clip of the Daiya Astro Space Racer tinplate car, another likely relative of Probe Force 3 and the Otaki Monster car, as they all share the similar bulbous engines and lateral exhaust vents.