Just as Google and Apple do, QNX contains multiple open source components from other parties that QNX does not own the copyright to including code licensed under APACHE, BSD-2C, BSD-3C, BSD-OPENSSL, BSD-V, ISC-V, GPL2-EX2, MIT, MIT-V, MPL, MPL10, PYTHON, UL, ZLIB (this is copy-pasted from QNX's own open source license compliance documentation). Anyone can sue Ford directly for using those components just as they can with the use of Google or Apple software.
Now, if QNX itself provides a complete indemnification from both copyright and patent lawsuits arising from the use of said code and Apple and Google do not, that's a different story. But unless that is the case, Ford is no safer with QNX.