While participating in a recent forum discussion in which a member suggested adding AEDs to public transport vehicles, I was driven to an article on Mass Transit Mag (here) that covered that exact topic. It was interesting to learn just how far we've come in making AEDs more available, but also how far we still have to go.
I'm also very curious about the future of AED tech as it works to solve this problem and deal with the issue that is still of major concern--bystanders not feeling comfortable utilizing the device. The article (which should be noted was from 2013), did discuss some of the improvements that have been made to the actual devices, but in reality they still seem far from something a bystander will jump to use/understand when to use them/realize what it is. I myself wasn't familiar with AEDs until recently and had often wondered what they were for when passing them in public locations.
This information from the SCA-aware.org was helpful in giving me a better understanding of where we sit currently (what myths exist, how most people feel about helping, etc.), but it seems like there's still a long way to go--sometimes overwhelmingly so. I'll be looking into efforts made by cities and probably other organizations in the not so distant future to better understand what's being seen as successful and what leaders are gaining ground on improving public health in this area. I plan to keep notes, thoughts and ideas here.