Ground Hog Day Level 1-31 is solved in two steps. Build a three box cart with power wheels. Place a soda bottle on each side, pointing down. Navigate your contraption towards the first cliff. When timed right, the soda burst should give your vehicle enough uplift to hover over the cliff, through the star box and across the finish line. In our second contraption, we added a power soda bottle pointing down also, above the pig. It will be used to smooth the landing after the far right ramp as no Krak Snap is allowed on this level.
If you have a different strategy for completing this level feel free to leave a comment below.