WOW! PENTADECKER BUS (A FIVE DECKER BUS)

I am sure many of you have taken a ride on a double decker bus, right?  What about a 5-decker bus?  Never.  Me neither.
These pentadeckers stand at 58 feet high and will run on biofuels thus keeping pollution down. These pentadecker buses are limited to Oxford Street and Piccadilly for the moment.
One thought that crossed my mind was this "Will it topple over?"

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