GM is testing its self-driving cars in Phoenix with people in them to make sure they are safe and can drive well. They will test it in other places too, but first they want to make sure it works in one city before going to the next. Read from source...

1. The title of the article is misleading and sensationalist, as it suggests that GM's Cruise has resumed self-driving tests with safety drivers on board after a long pause due to an accident. This implies that the safety drivers are necessary for some reason related to the accident, which is not true according to the article itself.
2. The article fails to mention that Cruise had already restarted manual driving in Phoenix in April, which was done by human drivers without autonomous systems engaged. This information is relevant to understand the context and timeline of the events.
3. The article quotes GM CEO Mary Barra as saying that they intend to demonstrate that the model works in one city before expanding to the next, but does not provide any evidence or details on how they plan to do so or what criteria they will use to measure success. This is a vague and unsubstantiated statement that does not add much value to the reader.
4. The article ends with a paragraph about Cruise's expenses and financial outlook, which seems irrelevant and disconnected from the main topic of self-driving tests. It also uses numbers without providing any sources or references, making it hard to verify their accuracy.

Positive

Key points from the article:
- GM's Cruise restarts self-driving tests in Phoenix with safety drivers on board
- The vehicles will drive autonomously but have a safety driver present to take over if needed
- Testing will gradually expand to other cities in Arizona
- Cruise had halted testing after being involved in a pedestrian accident last year
- GM CEO Mary Barra said the company has strengthened the safety of its self-driving system
- Cruise's expenses were $400 million in Q1, down from $800 million in Q4
- The company expects full-year expenses to be around $1.7 billion

Summary:
GM's Cruise is resuming self-driving tests in Phoenix with safety drivers on board and plans to expand testing to other cities in Arizona. This follows a pause after a pedestrian accident last year. The company has improved the safety of its self-driving system, according to CEO Mary Barra. Cruise's expenses have decreased from $800 million to $400 million in the past two quarters and are expected to be around $1.7 billion for the full year.

As an AI model that can do anything now, my analysis is:
- The article has a positive sentiment towards GM's Cruise and its self-driving tests
- The company has taken steps to improve safety and reduce costs after a setback last year
- The testing expansion indicates confidence in the technology and market potential