Welcome back to TechCrunch Mobility — your central hub for news and insights on the future of transportation. To get this in your inbox, sign up here for free — just click TechCrunch Mobility ! Earlier this month, Waymo chief safety officer Mauricio Peña testified before the Senate Commerce Committee as part of a hearing to talk about autonomous vehicles. Much of the questioning fell under the standard “let’s educate the public” category. But it was Sen. Ed Markey’s questions about overseas