Here are some target locations to check:
How to find a bug in your car. Bugs typically find their way into your car by climbing in through a crack or open window or by clinging to the rider’s clothing or belongings. Check the floor mats and in the nooks and crannies. This solution works well for the windows, the paint on the car, the tires, and is a great.
Through some less obvious routes, such as through the cracks between the window and the door, and between the door. If you park near an infestation, stink bugs can find their way into your car through the many panels, cracks, and crevices cars naturally have. Identify and determine what type of bugs and pests are infesting in the car.
There are actually two much. Sadly, the 8+6 other answers currently here divert attention away from the true and more disturbing answer to this question. Dip a bug sponge into the soapy water and scrub the bug remains off the car using a circular motion.
The common locations are the front or rear. Search for bugs in the car by improvised means the only way to detect the bugs yourself without using specialized equipment is to identify an alien. Are you willing to acquire skin irritations and anemia in the end?
Looking for bugs in a car can be a bit troublesome. Detecting bed bugs in cars. Take note, these bugs like to hide in small nooks.
1.1 underneath the car look. Some video cameras can be used as hidden bugs as well. What if there are already bed bugs inside your car and they are just too cunning to hide?