Thank you for your playing and feedback. I didn't notice it got edited too when I corrected typos www. I'm on my way to fix it.
Spoiler: To be honest, the true ending can explains why you can't interact with certain things. Because it's only in your head, your actual senses, like taste and touch, wouldn't have the feedback you needed to make it out, hence the taste of the foods and why you'll never find the car key. It's all about stress-induced dream, so unexplainable ridiculousness will bounds to occur in this kind of dream.