After Lyle Lanley convinced Springfield to buy a city monorail, he had these promotional bags printed up to make a quick buck. They highlight every city he managed to sell a monorail too.
Unfortunatley, the proceeds from the bags ended up going towards settling a lawsuit Lyle faced from North Haverbrook when his monorail collapsed under suspicious circumstances.
Luckily, we managed to grab a few. Get them before they're gone!