America abroad, electric cars and the fight against misinformation On the second day of the DealBook Online Summit , more top newsmakers in business, policy and culture will take the virtual stage. Here’s the lineup, with one big question we have for each session: 10:30-11 a.m. Eastern — Antony Blinken, U.S. Secretary of State What would the U.S. do if China invaded Taiwan? 11-11:30 a.m. — Ken Griffin of Citadel Is payment for order flow good for retail investors? 11:30-12 a.m. — Mary Barra of General Motors Why is Tesla worth 10 times more than G.M.? 12-12:30 p.m. — Darren…