This Mercedes Add-on is now modernized to my current coding skills and represents the peak of my code understanding. This Add-On is well optimized, using only one physical model with simple texture replacement variations, making the total cube count in game under 550.  Thank you to JannisX11 for entity wizard base vehicle code. Each car does fit one driver and three passengers.

9 color options are included in this add-on:

Keeping with the theme of luxury, the first and third passengers in the vehicle alongside the driver will be placed in the rear bucket seats, as if being driven around in a limousine. 

BOUNCE FUNCTION

With help from Bedrock Addons discord user Venoct Euphrosyne, a system was developed to toggle the bouncing feature on and off using a bounce tool item, which is located in the spawn egg folder. To turn on bounce mode and play one of four selected Maybach songs at random, simply equip the GLS with the bounce tool as if it were a saddle.

PBR Textures:

When using this addon with vibrant visuals, the Maybach's textures will utilize pbr materials, where the headlights and taillights are emissive, the outside body and wheels are shiny, and the interior is matte with glowing ambient lighting like in the picture below. It's a neat new feature to vibrant visuals you can try out with different packs. (Thank you to Exist-Zero for help with this feature https://mcpedl.com/user/exist-zero/ )