...the year, make and model of the car they're driving.. For simplicity sake, I'll use a vehicle that's similar to my 2005 Toyota Tacoma..
OK, first the year, it's usually on the label/sticker that's glued to the driver side door jam:
And now the make/brand, it's usually an emblem and located on the front grill:
And lastly, the model, it's usually on the back of the vehicle near the trunk/bumper area:
There are some cases where a manufacture will put the model name on the side too like so:
I know it's simple common knowledge information but since hmgROCK doesn't know, there may be a couple more folks out there that may not know either.