Sudden and fatal breakdown of TATA NEXON during highway drive

Sudden breakdown during highway drive. I was driving at 100km , when car srarted losing acceleration, within seconds, it stopped in middle of highway. I came out and to my surprise all wheels were locked, there was strong smell of burning plastic, I could not restart car as break pedal was jammed. I towed car to service station , and they told me that car is perfectly ok. I am not driving the car now, I do not want to take risk to my life.