If you work for a company, and you want to start a parallel project/business, some key points are:

a. Do not start a side project/business in the VERY same industry or about the VERY same product of your current employer (like in this case, Waymo/Otto/Uber). b. Do not use IPs, code, equipments, facilities, etc of your current employer (like in this case) c. Do not solicit most of your co-workers to quit and join you d. Do not download documents from your employer, save them on personal storage and then resign abruptly from the company

I have started several other businesses while working at large companies - if you don't get anywhere close to a/b/c/d you should be very fine.