If you have bed bugs in your car, there are a few things you can do to get rid of them. First, start by vacuuming the car thoroughly. Pay special attention to cracks and crevices where bed bugs like to hide. Once you've vacuumed, dispose of the bag immediately so the bed bugs don't escape back into your car.
Next, wash all of the fabric in your car - this includes seat covers, floor mats, and anything else that's made of fabric. Use hot water and put everything in the dryer on high heat for at least 30 minutes. This will kill any bedbugs that are hiding in the fabric.
Finally, use a powerful insecticide to spray the entire interior of your car. Be sure to follow the directions on the label carefully so that you don't end up harming yourself or damaging your car. With these steps, you should be able to get rid of most of the bedbugs in your car.