My grumble about busses

I watched a TV program last night on the ABC (Australian Broadcasting Commission) called "Grumpy Old Men", and today I'm inspired to publish my own grumble.

Buses: uncomfortable and noisy on the inside; worse on the outside. I call them growlers. They snarl their way along the city thoroughfares, and make my pedestrian experience a misery. Why can't the wretched things have their engines properly muffled? Or better yet, put electric motors in them, and remove two forms of pollution in one go.