Let the Chinese Test This One
I have no idea whether Baidu can pull this off or not, but apparently they think they can. And it's certainly possible that after a few years and a bit of collateral damage, (i.e. a number of injuries/fatalities both in and near the vehicle) they can make it work acceptably. At any rate, it seems a lot more plausible than Elon Musk's unending promises of full autonomy OTA Thursday next using a probably entirely inadequate (but real cheap) sensor array and liberal amounts of fairy dust.
There's also the fact that Chinese drivers in general are reputed to be less than great. An erratic robot vehicle may fit right in. I don't know if this is true, but it sounds plausible In Lanzhou a retired school teacher decided to teach bad drivers a lesson and threw bricks at cars that did not yield to pedestrians. Apparently a few other elderly men joined him, while onlookers rushed to get them more bricks and food (to keep up their throwing strength). The men damaged 30 cars before police stopped them. They have become internet heroes here. Source https://chinachange.org/2011/02/21/why-are-chinese-such-bad-drivers/
Note that the steering wheel is "detachable", not "optional". One suspects the authorities will quickly label it to be "essential safety equipment" and require it to be in the car at some handy location. They'll presumably need it for police/bystanders get the vehicle out of the way if (when) it breaks down.