Ever since I was 4 I've always seen cars as a safe haven, something to stop whatever was outside; a little bubble of safety. This game accentuates that and reminds me of one of my main childhood thoughts. Thank you EvilDog.
for the sequel, you should change the backgrounds, row after row of grey houses are just plain boring. also, the ice-cream on the trucks roof looks like a turret itself so you could do something with that.
my favourite bit is that the lack of story means you can add whatever reason you want for this guy to be going down the cave, for instance, he could have lost his keys and he happens to be searching for them, or maybe he's traversing his local city hall for something. i dunno what.