Hi John
that is a California Sidecar Escapade Elite trailer.
http://www.californiasidecar.com/trailers.htmit actually goes with my Gold Wing.
it pulls great, easy to balance the load for not too much tongue weight.
there is a basic trailer, and then you can just keep adding the options for more and more $$$$$$.
a lot of trailers are tall, and you can't see any lights on the bike.
this trailer has a low profile so the trunk lights on the Wing are still visible.
it's a pricey trailer when new....that one in the pic was $4,600, used ones can be found for a lot less.
there are many motorcycle cargo trailers available, and a large range of pricing.
if you need some more info just post back or you can email me
Ken