I have been collecting Hot Wheels now for about 15 years.
I have no idea how many cars I have in my collection,but is has to be more then 3,000.
Unlike most collectors, I take the car out of the packaging unless it is a hard to find car or what is called a variation.If I really like a particular one, I will buy two, one to open and display, and one to keep on it's original card.
My favorite castings are Muscle cars,Corvettes,Camaros, Mustangs,Mopars and old Hot Rods.
The detail on most of these cars have improved much over the years.
Check them out, you might get hooked on collecting too.