Who actually said itAlmost everyone sharing that line credits it to Gustavo Petro, the Colombian president and former mayor of Bogotá. Pew Research Center surveyed Americans in late 2015 and found that regular public transport use skewed towards people on lower incomes, Black and Hispanic Americans, immigrants and the under-fifties. Long-distance train travel drives much of the rest, since public transport distance rises steeply through the upper deciles, and the people in those deciles disproportionately report household incomes above 12,000 francs a month and a university degree. Swiss high earners do use public transport, then. Answerable, countable, and it requires nothing at all from the rich before the poor get anything.