It would be nice to not have to deal with catalytic converters in our vehicles' exhaust systems. Of course, if we didn't, we'd all be wearing oxygen masks to breathe through the dense smog, which would have its drawbacks too. So catalytic converters are here to stay, and chances are you've got a state agency where you live that’s dedicated to ensuring that your catalytic converters are working properly. If your catalytic converters are good, you get to drive your car. If your catalytic converters are bad, your car fails and you can't register the vehicle. Avoid the hassle and have your car inspected to ensure that your catalytic converters are in good condition—you'll breathe just a little easier.