Have you thought about selling your system directly to manufacturers for integration? I'm certain that there are chances if you're able to deliver a working component that can simply be integrated into existing models. Most of the current assistance systems aren't developed in-house but come from one of the big third party suppliers.
We don't touch any of the existing drive-by-wire controls, even if they're present. It's too dangerous to send signals down a CAN bus without a full understanding of the safety implications, and that kind of proprietary information isn't available to us.
https://www.google.com/search?q=old+person+drives+through+fa...
I'm afraid of the interaction between laypeople, a retrofitted cruise control that was designed on a kickstarter budget and several tonnes of hurtling steel.