bike automaticly;At Burning Nitrogen Gas Mode,the Engine transmise the bike with
chain.at same time charing back the ELECTROMANGET battery.
At Electric Mode,the battery roll the Electromagnet to move the
bike in 2WD mode (either just roll the rear tyre only).
When the battery running out,central process unit (CPU) will
auto switch the riding mode to burning Nitrogen Gas.
idea is add-on power mode switching.For Example:direct turn the power
mode to Nitrogen Gas / Battery BY THE USER.
Key Switch type: Using keyless technology like infrared.