There were 196,165,666 licensed drivers in the US in 2004. Assuming each driver gasses up their car once per week (many do more often than that) and there were 2,510 gas station vehicle fires. Of those fires, 48 people were injured and 2 died.
Your odds of being injured in a gas station fire are 1 in 1.7 to the 9th power. Your odds of dying in a gas station fire are 1 in 1.96 to the 10th power.
By comparison, you have a 1 in 1.4 to the 7th power chance of being killed by lightning.
In other words, there is no safety issue, there's only the question of convenience.
Yes, though too many people still idle their engines at the pump despite warning signs. General gratuitous idling is wasting too much fuel in Glutmerica. If the Elio could have an engine stop/start feature (like some current gas-only cars) I'd pay extra. If often do that manually during predictable waits for construction or fast food lines.