Someone will run with this and make their $1M, but I don't have the technical experience or contacts to make it happen:
Uber / Lyft could team up the the NNA and offer a "Can I get a witness" service. If they're delivering Taco Bell and everything else, why not let drivers get a few extra $$ for being a witness-on-call?
I've sat around a hospital & nursing home more than once waiting on people to grab someone out of the hallway. |