Testing a Lego car against different obstacles and improving it until it becomes a capable climber.
Demonstrates what you need to consider: wheel diameter, gear ratio, 4wheel drive, tire grip, breakover angle, weight distribution. Enjoy!

Base rules for all builds:
4 wheels
no steering (to simplify the builds)
only Lego parts used

Remote control:
SBrick https://www.sbrick.com/sbrick.html
BrickController 2 app (Android) https://play.google.com/store/apps/de...
PlayStation 4 wireless controller