You do a spot check to see if you have a problem. A 50% fail rate is one hell of a problem that warrants triggering a deeper look. God forbid they do a spot check first before doing any other checks on other cars so they know if they need to do further checks.
You do a spot check to see if you have a problem. A 50% fail rate is one hell of a problem that warrants triggering a deeper look. God forbid they do a spot check first before doing any other checks on other cars so they know if they need to do further checks.