Remember, the Autonomous Vehicle testing in California is still ongoing, non-stop, but with less incentive for GM Cruise.
.It now has to pay a human backup driver at all times, whereas it could skip staffing a human driver before this.
.It used to be able to collect fares from riders, but no longer during the suspension.
Many people don't realize the importance of a backup driver in Autonomous Vehicle testing, citing humans are the worst drivers. But...
The TuSimple Autonomous Semi Truck veered and collided with the left median cement wall. With a sedan, it's easy for a driver to take back the control to avoid a collision, but with a semi-truck, it seems to take much more effort, and the crashes are unavoidable.
Per the PDF above on post#22, Cruise can take steps to prove that its deficiencies were corrected in order to restore its permit.