Multiple GPS devices tracking

Hi. I am working on a project where I am required to install GPS modules to 2 bicycles. I then need to track these 2 bicycles on google maps. I know how to track 1 GPS device, but not 2 or more.

Any help with this topic would be really helpful!

Is this an Arduino problem?

If you post the Arduino program that you use to track one device someone may be able to advise you how to extend it to two devices.

...R