bolidJS

You mean a Bangle.js watch controlling your car? Absolutely - I don't think you need to use HID for that.

As an example, there's the Smartibot app - that communicates with a Smartibot (which also runs Espruino): https://github.com/espruino/BangleApps/blob/master/apps/smartibot/app.js

But basically all it does is:

• Connects
  
• Uploads some JS code (not required as you could have already programmed your car)
  
• Sends JS commands like w(1,0,0,0) to control the motors