Just a nice Kanji meaning for the word Tank!
Meaning: tank (the military vehicle)
Kanji: war + car
Here is another amusing word using the car Kanji.
Meaning: riding piggyback; riding on someone's shoulders
Kanji: shoulder + car
And here is one that at first glance looks amusing, but turns out to be somewhat disappointing.
Kanji: car + chair
The concept of chair that is a car is amusing, but another meaning of the Kanji 車 is simply wheel which makes this a "wheel + chair", exactly like it is in English, and therefore, not amusing at all.