But she also said it was easy for athletes to become discouraged when they suspected that their rivals were using drugs.

Yet Ford's rivals typically use either larger tires or recommend higher tire pressures.

So the rivals have used incompatible technologies, and both aim to become the de facto standard.

And her jealous rival, Zoe, is using this to her full advantage.

German regulators have been particularly tough, forcing Deutsche Telekom to let rivals use its network for comparatively low prices.

But persuading operators to let rivals use their infrastructure will not be easy; it will happen in, but a careful approach is needed.

"Persuading operators to let rivals use their infrastructure is not going to be easy," adds Pridantsev.

Governor Pataki's rivals could use that against him in next year's election.

While rivals use soft-touch materials in this sector, Nissan's plastics are hard, if well fitted.

The Knicks' main rival from Florida used to be Orlando.