Well, I'm not buying some of the explanations. Again, it's common sense that someone of Michael's importance just doesn't travel halfway across the country to see someone else of importance without making arrangements in advance. As someone has pointed out, Ola met Mike to lead him to Roth, so arrangements apparently had been made. The question is when and what is the reason for the meeting? Michael wants to reassure Roth that nothing is to interfere with their plans. Is that the reason? But, isn't that need for reassurance prompted by the attempted hit? Why else meet unless they needed to firm up whatever joint plans they had and, therefore, had planned the meeting even before the first communion.

Also, about Michael driving. Assassins would expect Michael to be seated in the back seat. I just don't buy that his bodyguard needed to keep his hands free and looking around. In real life, books, movies, and TV I've never seen or heard of such a strategy.