Have no idea who the others are, but I remember geohot from the various HN threads discussing their self-driving project: a safety-critical piece of software with important parts implemented in Python and running on an Android phone. When the NHTSA started asking some questions about safety standards compliance, geohot cancelled the project.

Finally it was open sourced and is currently sold with the following warranty: “[…]driver alertness is necessary, but not sufficient, for openpilot to be used safely and openpilot is provided with no warranty of fitness for any purpose.”