Yes, I have a fairly good idea what the average worker spends on transport. I used to employ the average worker and I had to pay their transport.

I have a great idea how the Gautrain works. It's because I have travelled on it around major city centres that I have a good idea that it doesn't exactly take the average worker anywhere.

The average worker has to take a few bus trips just to get to a train station, and then take a train just to get to a major city centre, and then has to take a taxi trip or two to get to work. None of those feature on the Gautrain route.