Your belief in the superiority of your own mattress-avoiding abilities seems odd. One likely outcome of a meat module detecting a mattress ahead at 70MPH would

Your belief in the superiority of your own mattress-avoiding abilities seems odd. One likely outcome of a meat module detecting a mattress ahead at 70MPH would probably be to slam on the brakes, lose control, flip over the barrier, slam head-first into a van full of little kids on a field trip where a dozen people die in the fire and it's all over the local news. Whereas a computer-driven car is likely to 1) detect such a large obstacle well in advance, 2) apply the brakes as safe levels while it thinks about something else to do, and 3) safely maneuver around the object within the performance envelope of the vehicle. Frankly, although I'm not pinning this on you, the widespread belief in one's own superiority is part of the problem with the legacy human driver.