Our favourite influenza A virus strain X31 was spotted on the streets of Bristol, contributing to the congestion. It appears to be protected by an envelope-like outer layer. Like buses in the streets of Bristol, viruses traffic inside the cell too, sometimes hiding inside endosomes, other times as a naked capsid along the cytoskeleton. Traffic in Bristol during certain hours of the day can be slow..., very much like endosome trafficking when microtubules are depolymerised. The bus's destination is Chippenham, an historic market town in Wiltshire, England, 13 miles east of Bath and 96 miles west of London. Photo by A. Rudnicka.