Any tips for these this driving game I'm working on? I'm experimenting. Followed a tutorial but didn't seem to get the same results

Here is the footage:

This was the tutorial I was using:

Here’s the code for my car:
https://codeshare.io/4YMm1j

Screenshot of the inspector:


Issues:

  • Skid marks and smoke don’t show

  • wheels get stuck under the ground plane

  • trouble adjusting shocks so sometimes wheels end up getting crushed into the car when going up ramps

  • car seems to turn while motionless

  • engine sound plays but the pitch doesn’t go up

  • no tire screeching sound