While waiting for the bus in Monte, Mexico, my partner noticed this Smart Fortwo parked nearby.
* 1 US gallon = 3.785 liters
* Gas was selling for 12.8 pesos/liter
* 1 US$ = 11.1517 Mexican pesos
So gas was (3.785 * 12.8) / 11.1517 = $4.345/US gallon. That makes the Smart Fortwo a practical choice in Mexico. Even more so in cities with narrow streets and limited parking.