I know at least some cars use or have used 8052s. Intel has (or had) a derivative designed especially for a car ECU. I also received an email just in the last few days from someone thanking me for the information on the website--it turns out he and some people he works with were actually modifying the ECU in a Honda CRX to get better or improved performance out of the engine. It was an 8052-based device, hence his interest in the website.

They might not be used in cars anymore, but I know they have been.

As for redundant systems being used, I doubt any civilian vehicle has that. Certainly not the Dodge Stratus that I have and want to sell ASAP. After all, they want you back in the shop to make more money. A low-maintenance vehicle based on redundant systems is going to cost more money to build AND result in fewer shop visits. :)

Regards,
Craig Steiner