I have a cool suggestion as future update to the game: an upgraded starting procedure. In fact, its a thing nobody talks about but could be a really nice and useful update. Its actually really simple: to start a car, we would have a 2-way startting. Press V once to turn on the equipment and etc. AND, the most important, to activate the starter, you would have to hold V. Also, i would like that, if you don't have more gas, you could activate the starter, even if the engine doesn't start. Sorry if i've been a bit confusing. English ain't my first language.
I believe currently the electrics system is completely separate from the engine starter system. I don't think it would be TOO complicated to combine them, but I don't think that's high up on the dev's priority list.