Interstate travel (especially here in Australia) means that sometimes the soonest someone can get there will be DAYS, purely from the tyranny of distance. Some

Interstate travel (especially here in Australia) means that sometimes the soonest someone can get there will be DAYS, purely from the tyranny of distance. Some of the things these trucks transport is required for very large & expensive projects which get more so with excessive delays. Paying a human trained in properly securing a load and changing a tyre nearly as big as the human is, to come along for the ride, is much cheaper than having a helicopter on standby every ~500km of the way and staff to be ready.