The old models actually had pretty weak sensors which indirectly caused the death of that one guy who used autopilot and t-boned a trailer.
> Eight surround cameras provide 360 degree visibility around the car at up to 250 meters of range.
Previously that was just one camera mounted in front of the rear view mirror
> Twelve updated ultrasonic sensors complement this vision, allowing for detection of both hard and soft objects at nearly twice the distance of the prior system.
Same number as before except instead of 16' of range it will be 32' of range.
> A forward-facing radar with enhanced processing provides additional data about the world on a redundant wavelength, capable of seeing through heavy rain, fog, dust and even the car ahead.
same number and position of radar sensors as before but possibly a beefed up type for inclement weather. I don't know what the prior one was capable of.
