Tesla still has to complete millions of miles of real-world testing before the software can be implemented. The company will run the software in the background while a professional drives the car and then compare what the computer would have done with what the person did do. The goal is for self-driving cars to be even better than humans at avoiding crashes. Tesla must also achieve regulatory approvals of full self-driving cars before it can legally drive on public roadways. Therefore, it is still unclear when customers (even those currently purchasing models featuring the new hardware) will be able to experience fully autonomous driving. The addition of the self-driving hardware to Tesla cars in considered a(n) . a. diffusion b. commercialization c. innovation d. concept test