You can test what Laproid is.

*** Trial Version Limitations ***
- Lap measurement up to 15 minutes at each.
- Lap data will be delete shortly.(Details TBD)
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It captures the lap time and it sends to the server, which can be monitored on the web site almost real time base for everyone.
http://laproid.appspot.com/

All the team members involved in the race can enjoy the game even from the pit.

Laproid aims at 'The all the people involved that takes part in a contest enjoys playing a competition.

Key Features
Android client side:
- User account (Nickname) need to be set up.
- Users can draw finish line(s) on the map (GoogleMap).
- Lap time, difference time, best lap, current speed, pit sign are presented.
- Simple and clear UI. Display items and font size can be modified by users.

Server service(Free):
- Open to everyone in viewing the race almost real time base including current location, speed and of course lap time at.
- Another Laproid user appears on the map. Enjoy the race more like a Grandprix.