Vehicle treatment arch with pressure differential indication system and tool engagement system

A vehicle vacuuming tool/hose locking mechanism comprising:

• a housing having an interior surface and interior volume within the housing sized to receive at least a portion of a vacuum tool within the interior volume of the housing;
• a locking mechanism within the housing, the locking mechanism comprising:
• an electrical solenoid operably connected to a piston such that, when energized, the electrical solenoid moves the piston from an extended position to a retracted position;
• a locking pawl slidably disposed on the interior surface of the housing opposite from a lock tooth and wherein the locking pawl is coupled to the piston having an engaging projection that is configured to positively lock the vacuum tool or a hose when in the extended position and allow release of the vacuum tool or the hose when in the retracted position;
• wherein the electrical solenoid is connected to a digital payment system that unlocks the vacuum tool or the hose when instruction to do so is provided from the digital payment system and the instruction is received by the locking mechanism;
• wherein the lock tooth and a tooth indentation of the vacuum tool interface such that the vacuum tool cannot slide out of a vacuum tool holder by gravity alone;
• and
• wherein a lower portion of the vacuum tool holder is configured to allow the vacuum tool to rotate downwardly such that the tooth indentation is removed from interfacing with the lock tooth such that the vacuum tool is removable from the vacuum tool holder.