Ah, excellent. It also gives me the opportunity to update this link, where it is demonstrated that the origin of the Tank lay not in Da Vinci's covered cart, nor in Joseph Hawker's tractor, but in Samuel Rowbottom's Automatic Tea Maker. That would probably get in Wikipedia. Read it to see the Simms connection.
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
Thought just occurred - has anyone noticed the resemblance between the Simm's War Car and Jabba's Sail Barge in Return of the Jedi? One to go with James' tea maker, perhaps...