Early this year, Cruise said it planned to hire 1,000 more people by the end of the year, and this month, it announced it would receive a $2.25 billion investment from SoftBank. But the company has also hinted at delays, and it's had its fair share of challenges. Last year, its tech reportedly struggled to recognize pedestrians, and GM has already faced one lawsuit over a crash involving a motorcycle.

Cruise is already testing its vehicles in San Francisco, and Ammann said it will significantly increase its testing and validation miles between now and the end of the year. While the driverless cars may be delayed, Ammann promises they're still on their way. "This new vehicle completely re-imagines from the ground up what a car can be and we can't wait to share more in the near future," he wrote.