Have visited the Glasgow Transport Museum a couple of times and was well impressed. I thought they had a good go at covering almost everything (except air travel) but with an obvious Scottish bent. It used to be next to the Kelvin Halls if I remember rightly. It's very difficult to cover everything in one building so you can't really blame them for concentrating on shipbuilding. Down here we've got a large museum devoted to buses which is very comprehensive and the Museum of Science and Industry in Manchester is well
worth a visit if you're down this way.
The current building is the Kelvin Hall and does have a good range, although squeezed in. The new building has less space apparently. I have had to take my exhibit out and its now in the Grampian Transport Museum.
Cheers
PD