For 1990-2009 cars

The driver's frontal airbag is in the middle of the steering wheel.

The right-front passenger's frontal airbag is in the instrument panel on the passenger's side.

Where are the side impact air bags?

The driver's side impact airbag is in the ceiling above the driver's side window.

The right-front passenger's side impact airbag is in the ceiling, above the passenger's side window.