Architectonic said:
Now there is some history we weren't taught in school!
Maybe you'd be interested in a little book called 'Lies my Teacher told me.' I remember I found the 5th grade history book so confusing I ran to the library to read about the American Revolution, leading to my reading about the War of 1812 and arguing with the fool statement that the U.S. somehow WON that war. . . .
So both the German and Japanese advances in the early years relied on unprepared enemies who couldn't deal with the inferior forces that were attacking them. Japan would need to be moving groups of 50,000 men and the like over hundreds of miles at a time, but were far more backward than people give them credit for and just didn't have trucks, etc.
The big problem with the Japanese bikes is they were rather light and lacked durability. There was assumptions that because they left behind 100 damaged bikes they'd have 100 casualties, but the bike itself often was the casualty. The Japanese were trained on how to die without laying on their gun and ammo so it could be recovered, but the bikes often didn't have enough reuseable parts, so they'd steal what they could from the local riders and move on.
If you think the German tanks at the beginning of the war were bad, you should have seen the Japanese tanks. But even a good tank unit would finish 2nd to a battery of antitank guns, except the gunners never seemed to know that, they'd run away as the tanks were coming. Rommel's success was built on understanding he could use antiaircraft guns on enemy tanks, evening the odds when he was outnumbered. So the engineers built the Tiger tank, which was more of a liability than an advantage, although one on one it lacked a match until late in the war.
But if you understood you could ride out of the woods on a bike or skiis and pitch a molotov cocktail or a bomb under the back and disable the tank, (As the Finns did to the Russians on a regular basis) you didn't need antitank guns, to a point. After Italy switched sides, the Germans occupied Rome and had to ban the bicycles, which were very effective in bombing runs downtown.
An electric bike powerful enough to tow an antitank gun would have worked wonders in either theater of the war. Today, I don't think that's how wars will be fought. Military doing crowd control, responding in the city. There's ways these could be useful.