2005 PRIUS WITH ABS/VSC AND CAUTION LIGHT ON. REDUCED BRAKING POWER TRACED TO BAD ANTI-SKID COMPUTER. ORDERED PART AND WAS CAUTIONED TO LIMIT DRIVING. LATER THAT DAY, EXITED FAST-FOOD DRIVE-THRU AND SAILED INTO STREET. NO BRAKING POWER WHATSOEVER EVEN WITH STANDING ON PEDAL. STOPPED VEHICLE BY PLOWING INTO CURB. VEHICLE THEN TOWED TO SHOP AWAITING PARTS. *TR