A word to the wise. The Atlas Front Runners have two "issues". One, they are very light empty, but you can add lead or tungsten shot to the underside of the "rib" easily. Two, is not so good: They have a bad reputation for wearing thru the "trucks" on each end, and that can't be repaired, that I'm aware of. They are nice looking cars, have decent detail, and can run alright.