The train was about an hour late arriving in Budapest. I'd been getting paranoid that I'd missed it. On board, it was busy. I found my way to a six seat cabin, in which I met two Serbs going to Subotica, two English girls going to Novi Sad, and a Hungarian who got off somewhere near the border. I chatted to the English girls for a while, then slept very badly. When we got woken up for the borders I felt so tired I hardly knew what was going on, but the Serb official who stamped me in was as jovial as any border guard I've ever met.
At dawn we reached Novi Sad. The English girls got off, and I had the compartment to myself. Dawn was breaking as we crossed the Danube, rumbling over a bridge that replaced one destroyed by NATO bombs in 1999. I slept until we got to Belgrade at eight.