Build a go-kart using readily available parts and a lawn mower engine. This is a very simple design built with junk yard scavenged parts mostly. Remember web uilt this as kids, the dimensions would alter somewhat for bigger riders.
"beautiful off-road ride" - might be a custom Volvo “Sugga” - The weighing Volvo had been made for the Swedish army, functioning as a radio wagon. Exactly 724 were produced between Based upon the Volvo it was driven by a six cylinder litre engine.
The Legacy Power Wagon. As the name suggests, it isn't new, but with only a handful crafted per year--by artisan auto mechanics at Legacy Classic Trucks in Jackson Hole, Wyoming--it remains one of the truck world's most coveted and collectible.