In message , at 17:40:53 on
Wed, 20 Apr 2011, Basil Jet remarked:

Can I use this without a plane ticket? Can I use this without a
long-stay car park ticket?

Don't know, and don't know.

Where's the nearest short-stay car park

The T5 multi-storey; that end of the pod track is actually inside it.

and how much time would I need to park there for?

An hour should be enough.

Or should I park somewhere in Osterley and get the tube in?

That'd be just as good.

Is the PRT free?

It might be free "if you have the right parking ticket". Also, is it
operating two-way, it might be just parking-terminal to start with.
--
Roland Perry