According to Israeli’s Channel 2... "The Americans filled it up with diesel, rather than [gasoline]"...It's all photo-ops and the symbolism.
It was a stroke of bad luck for the carefully choreographed arrival here, which featured a walk down a red carpet and warm words from both sides. The car was photographed on a flat-bed tow truck.
March 20, 2013
"President Obama’s armored Cadillac limo, which was supposed to schlep him around the Holy Land, broke down."
NY Post headline.