1. A drive through order system, comprising: a wired communications device operable to provide two-way communication between the order system and an order taker; an integrated circuit having a central processing unit and further having at least one analog input, at least one digital input, and at least one digital output; a memory coupled to said central processing unit and configured to store instructions including at least some fuzzy logic processing instructions and data for said central processing unit; a first sensor affixed to an immovable object and coupled to said at least one digital input or to said at least one analog input, wherein said first sensor has an immunity to a first environmental condition and a vulnerability to a second environmental condition; a second sensor affixed to either the immovable object or to a second immovable object, the second sensor coupled to said at least one digital input or to said at least one analog input, wherein said second sensor has a vulnerability to the first environmental condition and an immunity to the second environmental condition, and an output signal, arranged to indicate a presence of a vehicle in a location sensed by said first and second sensors, the output signal operable to be asserted in response to processing of information from at least one of said first and second sensors using said fuzzy logic processing instructions, wherein said fuzzy logic processing instructions are operable to select a variable rate at which information from said first sensor is acquired, said selection based on at least one signal from said second sensor, and wherein upon a determination that no vehicles are present in the location sensed by said first and second sensors, said fuzzy logic processing instructions are operable to select a reduced rate at which information from said first sensor is acquired.