Here is what I plan to do. If I off myself, and it isn't very sudden. I plan on deleting a lot of accounts, 99% of my emails, and so on. After which, I will make a will saying that what money and items I have can be sold off to pay for whatever is done with my body. I would then give the rest of my stuff, passwords, etc to my parents (who I live with) in the will.
I would then make an app which will let me press a button. It will indicate to me if it understands the current location or if I need to manually put in the location. From there, it will have a count down (maybe a good hour). When it hits 0 it will call the cops, and a TTS will keep repeating a message over and over and over for maybe 30 min. Maybe it will keep going. The TTS will tell the person on the other end that it is a TTS, what happened, my location, and so on.
Before pressing the button, I will put a cover over my car with some taped paper saying "there is a dead body inside. Please don't look unless if you're the cops. Please don't worry about calling the cops, because they already been called. Have a good day."
I'm iffy if my method will be night night or exit bag.
For those of you who don't know. In the USA, if you don't say who gets your money and what not. Chances are the gov will take it.