Sao Paulo after years

It is one of the biggest cities in e world. When I was here 32 years ago I was in Butantan Institute to see tropical snakes.
Today my friends left me in the center and I had 4 hours to explore again elegant Avenida Paulista, the downtown, Se Cathedral…. So many poor people sleep here on the streets! I think, even more then 32 years ago… Sao Paulo is a monster with polutted streets, noise and elegant gentelmen wearing ties and white shirts… City of contrasts!
I terminated my walk at Luz station. The station is old, but they recently opened a new express train service to GRU airport. It takes 30 min and costs only 8 reales. Great! Airport bus costs like 50 reales and often stays in the traffic jam…
But you still have to use free shuttle bus to get from the station to GRU airport terminals…
TAP plane is already waiting and I can use 60 min of free internet… To come home I will fly 3 planes: 10 hours to Lisbon, 4 hours to Warsaw and 1 hour to Gdansk…