False premise. The driver might not have been on the road if he couldn't rely on autopilot.
It's clear from the steer weight what it's intentions were.
You cannot compare it just with the worst case scenario. The driver, knowing his condition as demonstrated by the weight, could have taken a different form of transport, or none at all.
So you need to compare the pretty high chance of a unsupervised tesla crashing into a highway divider or parked lorry with the other modes of travel safety.
Instead you're picking an anecdote and running wild with it.