I couldn't figure it out even with this. Then my friend explained how a clutch worked and I started it on the first try. And I had been driving a tractor for years. But a tractor is a different torquey beast.
Meanwhile some gas cars will stall without accelerator input at straight road.
Cars spend no time at .5 mph but plenty at 60. Tractors spend almost no time above 15 and tons of time at .25mph. tractors will pull your house over. Cars won't.
You can pop the clutch in idle in 6th in a tractor and it'll likely start