For the people that believe that a car phone can cause a petrol pump to turn into a flame flower, try this link.
http://www.snopes.com/autos/hazards/gasvapor.asp
For info on static electricity and petrol stations, try this link:
http://www.snopes.com/autos/hazards/static.asp
It's amazing that considering there are all these 'reports', I've never spoken to anyone who has read one directly where either static electricity or a mobile set off a petrol station. Although I did hear that gullible was being removed from the dictionary!