Algodoo

I tried it with one of my cars that i made and made the water part longer and the car glided across the water

I made the following modifications to the scene:
1. Changed the car body collision layer to B.
2. Added (2) lasers with collision layer B.
3. Put first laser above and pointing down to track at 140 meter mark.
4. Put second laser same level and direction but slightly beyond end of water section.
5. Added (e)=>{Sim.timeFactor = 0.1} to onLaserHit script of 1st laser.
6. Added (e)=>{Sim.timeFactor = 1.0} to onLaserHit script of 2nd laser.

This creates a slow motion effect as the car goes thru the water.

Feel free to use this in your scene. I could upload the modified scene but I did not want to steal your idea.

Thanks s_noonan ive added another scene with youre idea and i gave you credit in it!

The new scene looks good and works well. Thanks for the credit.