That doesn't really answer the 'why does it need to be built into the bike' question.
In the long term, building this platform into a full bike means that we can offer plenty more - imagine being able to locate your bike if it was stolen or, imagine your bike could communicate with other vehicles around you to keep the rider safe.
This is not to say that we only offer full bikes in the future. However, having the full bike now is allowing us to perfect the platform and understand the full range of needs for our riders.
If you are offering bike location--how long before thieves/hackers figure out how to disable it? Will it work when the bike has no power? Will thieves be able to use the tracking signal to find expensive bikes to steal?