Video : https://www.reddit.com/r/HyruleEngineering/comments/1m12jsg/amphibian_vehicle_with_reversible_electric_switch/
A simple amphibian vehicle with reversible aquatic mode. Due to the propellers it can climb relatively well. (Though not as well as a dedicated climber, as adding a gimbal steering stick created conflicts with the propellers' alignment). It has 5 spare parts for customization.
Click here to dive into the comments!