7A is a functional block diagram of the ultrasonic imaging system illustrated in FIG. 1 using a microprocessor. [0111]FIG. 7B is a functional block diagram of the ultrasonic imaging system illustrated in FIG. 1 using an application specific integrated circuit (ASIC). [0112]FIG. 8 is a side view with parts cutaway and removed of a vehicle showing the passenger compartment containing a box on the f