Automobile racinghigh$-$performance driving schools, and driver education programs run by mutomobile clubs continue to in popularityAll these activities require the to wear a helmet that is by the Snell Memorial Foundationa notforprofit organization dedicated to research, education, testingand of standards SA $($Sports Application$)$ rated professional helmets are designed for auto and provide extreme impact resistance and protection One of the key factors in selecting a helmet is weight, since lower weight helmets tend to place less stress on the neckThe following data show the weight and for $18$ SA $($SoloRacer Helmet Weight $()$ Price $()239$ Pyrotect Pyrotect Pro Airflow Graphics RC Full Face $642832016420529549893341$ AR$10$ HX$-10$ Impact Racing Super Sport $1$ Zamp RZ$-2$ RZSport Zamp R$2-3$ Sport Painted M$2662095830130552524760$ Dell M$4$ Pro $559$