Funny thing is, I always see the bike. I wonder why those scientific reasons don't apply to me? And in my experience, when you displace responsibility (for seeing oncoming traffic, or staying in your lane) then humans come to rely on that. I expect people can be taught to actually pay attention. These devices enable innattention. "Hey, the car will let me know if I start drifting into another lane. Let me answer that text". Too bad, when the driver goofs, the engine doesn't shut off for 15 minutes (after a 1 minute warning period) to let the driver think about the error. Or perhaps records the incident and notifies the police to issue a citation. Now that is technology I could support.