This was great fun but the black bar card really damped the experience after I figured out the mechanics. Made the game far too easy.
I ended up getting to 10k height before softlocking myself in a shop by accident, but I could have climbed as high as I wanted with the black bar cars as I could cycle to them very easily.
I also couldn't figure out the purchasing mechanic as at one point my deck was marked as 'full' no matter how many cards I sold.
Overall very fun, would absolutely play a full version with some tweaks to the formula!