It does seem as though police and news organizations are going way overboard to avoid suggesting that there might be a terrorist motivation involved--or even to hold this guy responsible for what seems to have been an intentional attack. Maybe it is just a medication problem:
It's not clear if Daly had diabetes but it does appear he was on some kind of medication at the time of the crash.
Rose says, "he had just changed medications and that made him very sleepy and fatigued the night of the accident and that he blacked out."Sure seems a bit weird.