"mmellor" wrote:

ULTra pods are self (battery) powered, with no ability to couple
together. The theory is that the headway is as short as 2 or 3s, and
they recharge when stationary, awaiting the call.


You write about ULTra pods as though there are existing systems that
are carrying hundreds of thousands of people reliably, in comfort and
safely. If so, where can they be seen in full operation carrying
members of the public on a daily basis? Where can I ride on one?

Or is this just someone trying to float untried technology for an
extremely demanding application (one of the five busiest airports in
the world) on the basis of an unrepresentative small scale short term
trial in Cardiff, Wales?