The stations that are to be used on the  London Crossrail line are presently having all the Chewing Gum removed from their platforms by four Steam Clean Systems Gum Gulper Street Carts. The amount of gum left on the platforms is simply mind boggling. In one four and a half hour shift the 4 machines are removing upwards of 12,000 wads of gum, some of which is reckoned to have been there for over ten years.

It's certainly testament to the Gum Gulper Street Cart's Super Ability.