But wouldn't a company with its rolling stocks adless reflect
better in the company. Take aircraft for example, very few
companies are willing to put ads on it, and only for their
own/country's promotion would they paste ads...
Actually, ads not only damage the train itself, also the
passengers' reputation (less space in windows to view through) and
the image of the company.
I don't like trains with ads. Take my favourite country which is
full of trains and you will know why.
Anyways, cheers for adless trains...