Conviction - Recovery of 20 kgs 'charas' - Narcotic powder/charas seized from possession of accused never produced before trial Court as material exhibit - Seizure panchnama not drawn at the spot where contraband recovered from car but drawn at Shamlaji Circuit House 12 km. Away - Private Car not a public conveyance, hence, search of private Car requires search-warrant even if search carried out on highway - Conviction reversed