To talk on top of a flying hill

Basil Grant and I were talking one day in what is perhaps the most perfect place for talking on earth—the top of a tolerably deserted tramcar. To talk on the top of a hill is superb, but to talk on the top of a flying hill is a fairy tale.

G.K. Chesterton, The Club of Queer Trades

I now want to ride on top of a double decker bus.