This is a passenger announcement. You can now book your train on Uber and get 10% back in credits to spend on Uber eats.

So you can order your own fries instead of eating everyone else's.

Trains, now on Uber. T's and C's apply. Check the Uber app. Amazon started as an online bookstore then moved to dominate online retailing and cloud computing.

Will it now change the game for digital advertising?

It's going to be the largest player

in digital advertising in America this year,

overtaking the Telecom's Giants, Verizon, and AT&T.

And we get back to basics.

Join me, Captain Sensible, on my economic policy tour of London.

We're standing by a pot hole and a sign warning of some maintenance to come.

And indeed, maintenance spending on infrastructure is the first boring, sensible recommendation that we have in this week's

economist. I'm Ratch Neshine Bogue at the Economist and you're listening to money talks.

First... to China, where the government is worried about the state of the economy.

China's stock market is one of the world's worst performing stock markets this year and GDP figures released last week

revealed a slowing pace of growth. In recent days though officials have stepped in to

soothe investors.

On Monday, the stock market had its best day since March 2016.

Simon Rabinovich is our Asia economics editor.

Hello Simon.

Hi, Russia. Why has the stock market done so poorly this year?

The stock market in China is very immature, so the day-to-day movements I don't want to put too much

emphasis on there being kind of a fundamental reason for them.

...