I don't think so. 'As good as humans can do' would be useful.
I don't understand why you'd have that opinion. If it's no riskier and relieves people from having to drive then that seems like a net benefit to me.
As another example, imagine if you had a radiotherapy machine, when operated manually it randomly kills 1/10000 patients, but when operated by AI it randomly kills 1/100000 patients. Yet I'm 100% certain even though it's a 10x improvement over a human operator it still wouldn't be allowed on the market.
Hmm I don't agree I think people would go for that.
That wasn't AI - it was a concurrency error, wasn't it?
You shouldn't discard technology because sometimes it's wrong. It can be better overall.
I think people's idea of what a computer should be doing has changed a lot since then, due to the common knowledge of AI applications.
Perhaps we're close to the situation where when a person makes a mistake they're asked 'why weren't you using the computer?' I've seen this happen myself.
If we're willing to settle for "as good as a human" in autonomous vehicles, then IMHO all this expertise, R&D, time, effort, money, etc. would be better spent on the public transit and/or active mobility solutions of the near-future.
And plenty of us humans can and do drive reasonably-safely in snowy/icy conditions. It takes practice, like anything else driving-related, but it's something that most drivers north of the Mason-Dixon Line likely have quite a bit of practice with and have to handle a significant fraction of the year. It's not unreasonable to hold self-driving cars to the same standard.