wrote:
In article ,
(Recliner) wrote:

On Tue, 4 Nov 2014 08:12:03 -0800 (PST), wrote:

The RV1 bus it is Hydrogen powered.

Following your suggestion, I had a go on it today. It's not as quiet
as I expected, presumably because of the various fans and the gearbox.
Even when stationary in traffic, you can hear stuff whirring away. And
they certainly want to make quite sure you know how it's powered!
https://www.flickr.com/photos/reclin...7648736684940/

Gearbox? Isn't it electrically powered?

Yes, but the power presumably goes via a reduction gearbox, just as it does
with electric cars and trains. There's certainly more mechanical noise than
I expected, or you get on a Boris Bus when the diesel unit is off.