Need to check your email? Just hail a taxi or catch a bus. Folks running the transit system in the 240,000-strong city of Porto seem to think wireless Internet is a basic human right. They’ve installed a system that turns 600 taxis and buses into mobile hubs for people on the go — the world’s largest vehicle-based network. The routers, run by app startup Veniam, also collect data about driving patterns to inform future urban planning decisions.