Testing could mean driving the car over a test track 24 hours a day, seven days a week, for more than a month.

In the study, 36 drivers on a test track stopped before the white line about 95 percent of the time when the light showed red.

The campus includes the work of a small test track.

We gun it out of the garage and on to the test track.

"In the morning you can hear the roar of the car there on the test track," he said.

This factory was large enough to include a covered test track.

The prototype was pushed along its short test track by hand.

And then we'll still get surprises when we put a model on a test track to see how it will look in traffic.

The center had been rented to a number of auto companies for use as a test track.

On the test track, it was the least likely to come unglued.