The first thing to understand is that has two distinct types of activation keys:
Players want to experience the game exactly as it launched in 2012, complete with original physics, older truck models, and the classic user interface.
Note: While version 1.1.1 itself may not always be actively hosted due to ancient engine incompatibilities with modern Windows OS, Steam provides versions very close to it (like 1.3.1 or 1.4.1), which retain the exact retro feel while offering better stability. Activating an Old Retail CD Key on Steam