Makes sense. Would be pretty cool if Apple could find a way to correct GPS jamming using accelerometers and some logic. If your GPS location jump 50 kilometers in 2 minutes, ignore GPS and use cell tower + accelerometer. Maybe create some sort of mesh network, using other phones and nearby SSIDs to get a makeshift location positioning.

That does come with the risk of Tim Cook falling out of a window.

Most current phones already use these techniques (and more) just simply to account for poor signals, which have long been an issue with GPS because signal strength and SNR are inherently very low.