Wow, I never even though about making it that difficult!
I just built a big box for the whole thing to start out on, so it didn't have to climb so high.
I had just finished tube, so it was fresh in my mind and thought I could make a car that would climb up, fall right, then swing into the goal on a leash. Unfortunately it became increasingly complex when I couldn't get the car to fall the right way and ended up making minor tweaks for about 2 hours