I was getting ready to post a message that details the whole story about Shell Oil warnings and gas stations and thought...lets look into it.
Basically, it's "Mostly Safe".
Pump your gas, leave the phone in the car, and you'll be fine.
The one thing you might want to consider is that if you're particularly "Static Prone", to make sure that you discharge your static into something. Grab a metal pipe or the body of your car and let that static electricity go.
There. Cleared that one up for you.
So if you would like to follow up on the entire story, you can follow this link. Just consider the gas station a chance to let your ear rest and relax just a little bit while you discharge your static.
Since I am being so helpful today, I've decided to add a video about something that fascinated me. Ever have a problem opening a Champagne Cork? You've heard of people using a Sabre to open one. You know, that longish sword? Here's how to do it.
Ahh much better.