Awesome theme and texture work! And I love the audio design aswell. To my taste, the car feels a bit too floaty even at lower speeds. Homie needs a new set of tires asap! I also think it could be nice if the dimensions changed instantly when the portal-key is pressed. Few times I got the bar full easily, but just could't find the portal in time.
This has a lot of potential to become a masterpiece. Well done!