Olympic: What is that little red car on the field/turf?

Question

It's a cute little red car. It has wings. When you watch the athletes run you can see the little red cars moving. It looks like it's control by a remote since it has an attenna.

Answer 1

The remote control cars are used for returning equipment, for example: javelins.

There is a story and pictures here -

http://www.freep.com/apps/pbcs.dll/artic...