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Federal Surveillance Tech Becomes Mandatory in New Cars by 2027
(www.yahoo.com)
This is a most excellent place for technology news and articles.
There's more than this required to build anything that'd be needed to survive in an automotive environment, and considerably more if you are hoping to have an open source/FOSS design that would be accepted as a suitable replacement for something proprietary, although I don't think that was your aim (but it does sound like OP's). I'm all for grassroots/homebrew stuff but we're talking about a thousand kilos+ of steel and plastic being hurled down a road carrying people, in and around other people in similar contraptions. This isn't something I'd exactly condone throwing a hackerspace's resources and some Arduinos at.
You are right that this sort of project should not be attempted by a beginner. It would have to be a collaboration between several experienced engineers. OP should not attempt this alone.
My hope is that by the time these surveillance systems become mainstream, OP has enough experience to collaborate with others on such a project.
And since you mentioned throwing Arduinos at cars, I thought I'd mention that there's apparently over a thousand cars that have had their ECU replaced by a specially-designed Arduino. I guess there's several open-source ECU projects out there. Might not be street legal in all jurisdictions though ๐