The Sand Hill Road folks will only invest if you can also switch all ambulance drivers over to non-employee commission only contractors.
A Free Ambulance service? Limited international growth prospects given the number of established players.
It could be a success in the US if you let people pay to not get hit ;) (people buy a tracker). Maybe this is the way to finally introduce universal health care.
Uberlance. Just Uber with some band-aids in the backseat and they clean up blood stains for you.