Project GPS carwash open source

I recently had a new idea for a hobby. Well, there must be a person distracted from work, so as not to go crazy. And I decided to try to make an alarm for my Arduino based car using GPS and GSM.

Today the market offers many similar solutions. The sensors in the car signal the device about its condition, the device is capable of receiving GPS coordinates and transmitting them via the GSM channel, either via SMS or through a special application for the smartphone. Some devices allow you to remotely control the car, turn off the ignition and carry out other anti-theft actions. The upper category of such devices is generally serviced by companies that monitor your car for a certain monthly fee. Also, such devices are often used by transport companies.

For myself personally, I wanted to start off with a fairly simple project, which would be powered from the vehicle’s network and could report GPS coordinates via SMS both on request and in the case of engine start (I think this point can be monitored through a power surge) and in the case of rocking and vibration of the car (vibration sensor).

And I was not going to talk about this to the general public if it were not for my friend, a big fan of open source and “public funding.” He began to convince me that such an idea might be interesting to many.
')
I personally doubt it, but I decided to ask the friendly community if such a project has the right to life.

With the help of crowdfunding, you can use a small team to develop software, with the possibility of modular expansion of the project (say, connecting to OBD-adapters , well, and what else can you think up), make the connection to the network non-volatile (network - charger - battery - Arduino sandwich), make decent boxes for the whole project. And turn all this into a designer for everyone, putting the program code in open access to the joy of a wide audience of Arduino.

UPDATE: judging by the comments, I did not accurately describe my idea. I did not plan to do the replacement of a regular alarm with a key fob. Just a beacon that can track the position and condition of the car, and send this data somewhere via GSM. I did not want to open the car from the phone. So I renamed the topic, this is something like a car GPS beacon with remote control.