"The 4-3 concept caught them off balance and was responsible for a lot of the pressure we got."

While the cars were well received, the concept did not catch on and was retired.

The concept caught on and the event grew bigger every year.

But she knows why the concept will catch on more easily here.

The concept caught fire and spread quickly, not only across America but the world.

But then the concept caught fire, and by 1997, the number had shot up to almost 28 percent.

But at this point, no one really knows which concepts will catch on.

This concept has caught on and is now common jargon in business schools.

Yet the concept has caught on in this part of Europe.

Whether the concept will catch on remains to be seen.