The Biden administration’s push to upgrade American infrastructure is partly motivated by seeing China’s sleek infrastructure, including bullet trains that go more than 185 mph. These speedy trains have gradually replaced the slower, green-colored carriages. However, in recent years, the Chinese government has designated 81 routes remaining from the Mao era for the poor. On today’s show: A look inside those trains. Plus, commercial construction faces a rocky year, Apple bets that users will opt in to be tracked and how a food business tied to the hotel industry is recovering from COVID-19.