Do you frequently travel or commute on the highway, but the traffic slows down to 5 mph while the HOV lane traffic still zooms by at 80? You must have a problem and wanna sneak into there. You can do so now with a few cheap things.
Step 1: What should you do? Mannequin?
The first thought that comes to mind would probably be "put a realistic mannequin in the passenger seat." That would fool cops, but it would be pretty darn expensive to buy one... So let's look at some cheaper alternatives.
Step 2: Seat cover?
Another idea is to use a seat cover with an image of a person printed onto it. But however, it's also pretty expensive.
Step 3: So it all comes down to this.
you should definitely go on the cheap! So you'll need to make a headrest cover with the picture of a person's face and part of their neck on it. You just need 2 pieces of fabric, sewing skill, and t-shirt transfers that are the right size. If it ende up not being a perfect fit, buy some foam pad from Walmart. Be sure to make it pretty big and natural size; that means if it's not able to fit your headrest, don't make it a perfect fit. Next, go buy a cheap t-shirt, short or long sleeve, pullover hoodie, or sweatshirt, somewhere between $5 and $20, and it must have side seams if there are armrest(s). DON'T USE OLD ONES! Some places I have confirmed to sell cheap shirts are Walmart, Aeropostale, and Old Navy. Now it needs to correspond with the face you printed onto the headrest cover, so if you used a woman's face, buy a ladies tee/hoodie/sweatshirt. Then you'll need a pool noodle or some sort of cylindrical foam that would fit into the sleeves or your garment. If you use a short sleeve tee, you should paint it the color of the face's skin.
Step 4: Putting it all together
Now it's time to put it all together!!