Horizontal Tables and Grouping

Hi,

I am trying to group a list of vehicles by Type and Location, however I would like the Type Group to be horizontal, and the Car Registration field to be dynamic.

I have search around and found some useful tutorials such as:

http://social.msdn.microsoft.com/Forums/sqlserver/en-US/d11bb144-3523-4dc9-bfcf-38ef11af99db/horizontal-table-with-dynamic-rows?forum=sqlreportingservices

http://blogs.msdn.com/b/chrishays/archive/2004/07/23/horizontaltables.aspx

However I can't seem to get the correct result. My Matrix looks like this at the minute:

Birmingham                      Toyota                Audi                    BMW 

                                      BD57LFT

                                      BD55HFG

                                                             TR55GFR

                                                                                       HG54GFD

                                     GF61JHG

                                                                                       KF54JGH

to get the above I am simply grouping using row groups by Location then vehicle, and Column group by Type.I can't seem to get the Vehicle Registration numbers all on the same rows, it should look like:

Birmingham                      Toyota                Audi                    BMW 

                                      BD57LFT            TR55GFR             HG54GFD

                                     BD55HFG                                      KF54JGH

                                      GF61JHG

Do you know what changes I need to make to get each item on the same row?

Thanks in advance.