So, that's a good idea of what not to do, but, what would be a good idea of what to do?
What I couldn't tell was what was behind him. If he was not surrounded, then the right answer is put the car in reverse and get the hell out of there. If he was surrounded? I don't see any good options.
Well, that's what we have trials for. The prosecutors will be able to tell whether he had a peaceful option, because they'll spend the time necessary to piece together the various videos and see what really happened. If he was not being threatened at the time he accelerated into the crowd, then it seems like a capital murder case. He killed one during an attempt at mass murder.
If his lawyers can make a case that he had a reasonable fear for his life, then it might be difficult to secure a conviction on anything.