That sounds like a great addition to the game! Having the option to use a Kaercher Lance for washing vehicles anywhere in the game adds a realistic touch and enhances the gameplay experience. The ability to choose between a short or long lance for the right or left hand provides players with customization options to suit their preferences.
Placing this mod in the "Miscellaneous and Hand Tools" category makes sense, as it is a tool used for vehicle maintenance and falls under the miscellaneous category due to its unique functionality.
At a price of $4,500 in the game, it seems like a fair cost for a specialized tool like the Kaercher Lance. This price point adds a challenge for players to work towards acquiring the lance while also adding value to the gameplay by providing a useful tool for vehicle cleaning.
Overall, this mod seems well thought out and would definitely enhance the gameplay experience for players who enjoy vehicle maintenance tasks in the game. It adds realism and immersion to the virtual farming experience.