thats because in oil producing nations gas is so cheap
people dont even turn off their engines..

my mechanic who just came back from his pilgrimage to Mecca
was in a hotel in Saudi Arabia and went outside for a smoke
(even though the security guard said its ok to smoke inside)
all the cars that were outside the hotel were idling and he asked one driver if he could shut the engine off -- the guy said no way man its too expensive! (ie. wear and tear)