The largest vehicle recall in history is underway involving 34 million cars and you may be driving one.

The Takata Corporation makes air bags and a defect in them has reportedly caused hundreds of injuries and at least six deaths.  According to AOL.com:

The driver and passenger-side air bags can inflate with too much force, blowing apart a metal canister and sending shards flying at drivers and passengers. The defect has caused at least six deaths and more than 100 injuries worldwide. Takata, automakers and the government are still trying to pinpoint the cause of the problem, but are prioritizing repairs in humid climates, because Takata believes longtime exposure to high humidity can be a factor.

This is related to the air bag system, not the vehicle itself so quite a few models are being recalled from several manufacturers. Honda has the most but dozens of other models made by BMW, Chrysler, Ford, General Motors, Mazda, Mitsubishi, Nissan, Subaru and Toyota dating to the 2001 model year are listed.

If your car is involved, you should have gotten a letter.  Click here to see if your vehicle is being recalled or you can search by your VIN number .