If you have Google Earth, Copy & paste ...
54 39.17'N 5 48.04'W
into the search box, that will get you the car park at the Transport Museum, can also be used in the destination box of the 'directions' tab
Or the following is from the Museums site
http://www.uftm.org.uk/visiting_info...el_directions/
Can't go myself
, but it looks like it's going to be a great day