The 1970 AMC Rebel Machine put 340 horsepower and 430 lb-ft of 390 V8 torque into a mid-size body for ,475, ran a 14.4-second quarter mile, and wore a hood scoop with the tachometer mounted inside it. AMC built 2,326 and never made another. Here is why the smallest automaker in Detroit’s boldest muscle car vanished after one year.