DRIVING ON A STRAIGHT INTERSTATE. SPEED LIMIT WAS 70 MPH. ROAD SURFACE WAS WET. DROVE OVER WATER, ENGINE ABRUPTLY SURGED, SIMILAR TO PUSHING ACCELERATOR TO FLOOR. FRONT END VEERED ABRUPTLY LEFT. I APPLIED BRAKES. CAR SPUN BACKWARDS. REAR RIGHT WHEEL MADE CONTACT WITH THE METAL CABLE-TYPE BARRIER ON LEFT SIDE OF HIGHWAY. *TR