I am intrigued that it is now possible to create military vehicles based on the design mechanics in Civilian Vehicles.

One could use the design mechanic to design a wooden hulled Man-O'War sailing ship, build up an armada of them and run an old-fashioned sea battle or some such conflict.

Or an armada of landships, for an unusual take on piracy on a low-tech "lost" world of barbarian tribes.

In any case, I think I'll be able to get a lot out of this one book alone, even if I never buy the second book now.