A quaternary ammonium salt of the formula, electrolytic solution and electrochemical device using the saltwherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X\u2212 is N2\u2212, SCN\u2212, NO3\u2212, NCO\u2212 or NO2\u2212. First, a sensor-based powertrain torque estimate is obtained. The K-Web optionally does this by presenting content in a dynamic, webbed structure that is readily accessible in many different ways to many different intelligences and cognitive styles. Abstract controls for the selected user interface device are provided to the application program, which are then used to present the data to the user using the selected user interface device.