Once upon a time here in the Northern Territory of Australia this sign really did mean 'go flat out'
The fun police got themselves elected and introduced the speed limit of 130km/h. They said it was in the interest of road safety. Road fatalities increased significantly, like 200% and been climbing ever since. They really did it under political pressure from the federal gov. Feds were withholding funding for something in Darwin until they made the change.
Their political opposition have a mandate to remove the restriction if elected. Got my vote already.
Sorry, went political for a minute. I'll stop now.