Comment by analog31

This idea occurred to me while I was traveling in Europe. Many of their trains have two classes of cars, where the first class is just slightly nicer. This could be done with buses too. Just alternate buses on the same route, that are expensive and free. The poor can take the free bus, and those who want a more exclusive social experience can pay for the expensive bus.

I can't make any excuses for the social and class implications, but if it got more people on the bus, it might only need to be a temporary measure.