For 15 minutes the cars could be refuelled , re-tyred .
For 15 minutes the cars could be have any necessary maintenance carried out , as long as the parts and tools to do so ( except fuel and tyres ) were already in the vehicle .
For 15 minutes the cars could be refuelled , re-tyred , and have any necessary maintenance carried out , as long as the parts and tools to do so ( except fuel and tyres ) were already in the vehicle .