On Monday 3rd September 2012, I did something I'd wanted to do for a long time: to have a ride on the Sentinel Steam Bus at Whitby, Yorkshire, on the east coast of England.
Possibly the only Sentinel Steam waggon still earning a regular income for its owners, 'Elizabeth', Sentinel Works Number 8590, departs for a trip around Whitby about every 20 minutes or so from near the eastern end of the northern quayside. (She is easy to find).
Built in 1931, Elizabeth is a Sentinel DG6P (Double Geared, 6-wheeled vehicle with Pneumatic tyres). But I mustn't steel the thunder here - have a look at Elizabeth's own website for more detail; it's a fascinating story.