Bugfixing 1.3.1

Bugfixes:

• Possible issue - total time not resetting when starting/restarting a level

Improvements:

• Some performance improvements
  • Reduced new reference calls per frame from vehicles
  • Calling some functions between frames (during idle time)

WIP:

• See through environment elements near the player vehicle (toggle)
• Actual short tutorial on how to play and control the vehicle since its different from the majority of racing games
• New vehicle types