Sailboat on land wind 

This will be a boat/ car figure that is used in windy, long roads. The sail catches the wind and moves.

Swimming in box hydro

Bathtub on wheels with a hydro power rotator on the back that spins the wheels. You swim in the car and the bath travels.

Geothermal sailboat , water refill station

This will be similar to the sailboat on land but it has a water tank that will be used for steam/ wind energy on the sail. 

Biomass eater car 

Car that eats trash, turns it into energy to move. This can be used in trash dumps and also as fuel for this car.

Underground biomass eater, replaces dirt

This eats dirt in the ground and then replaces dirt behind it to walk. Along with this, it eats the trash in the ground for biomass energy.