Clive Coleman. wrote:
In message , John Rowland
writes
"Six 15t automated cars, each with a capacity to carry up to 75 passengers,
have been delicately lowered by crane down a 12m shaft into the tunnel
system of T5's tracked transit system (TTS), ready for commissioning. "
I would guess the idea is similar to the driverless trains that feed
Kennedy Airport NY?

....or the Westinghouse-built systems at Stansted and Gatwick. (Though
the article says this system has been built by Bombardier.)