And this, which I wouldn't be surprised if it was a grotesquely mistaken interpretation of the USN battleships' guns sent to the Front as railway guns:
This is interesting, from December 1917 - 'The Caterpillar Tank: What It Is And How It Works' (note the diabolical Hun looking suitably terrified - quite right too!):
Maybe they had instructions on how to build your own tank from tea-chests, some old nails, a saucepan and some baling wire?
'Everyday Engineering' seems to have been far less warlike than the other journals, taking a more sober view if the covers, such as this, reflect the contents (it probably helped that the ludicrous Gernsback had nothing to do with it!):
This picture posted by Roger actually mirrors an actual project (albeit one killed in the design phase). There was a plan for the post ww1 period to bring commercial aviation to London by building a vast landing platform on top of St Pancras and Kings Cross stations in London. This would have included some form of arrestor gear and launching catapults making the whole thing like some sort of gigantic land based aircraft carrier. Passengers could arrive and depart by train, taking a lift (elevator) to and from the aircraft which would have included civilian versions of the Handley Page 0/400 heavy bomber. It was the preliminary costing that killed the scheme and instead the first London airport was established at Hendon (about where the RAF museum is today). Doubtless the picture shows the New York version on Grand Central
A lot of these weapons remind me of the sci-fi weapons from Star Wars Episode II. General Grievous' wheel bike looks strikingly like the "war tank on one wheel" and the battle scene at the end features many big wheel type tanks. I wonder if George Lucas or the effects crew have a soft spot for big wheel tanks?
That wouldn't surprise me at all. George Lucas and his team should know quite a lot about tanks. Remember the tank in Indiana Jones and the Last Crusade? When I was in the Bovington library some years ago, David Fletcher told me that the George Lucas team had visited him to hire one of the WW1 tanks from the museum for this movie.... Luckily, Bovington refused and George Lucas built his own version, clearly inspired on the Bovington tanks.