Mike, Congratulations! You've won both showcases! This is Bob Barker, reminding you to help control the pet population; have your spet spayed or neutered. Bye bye Everybody. We'll see you next time on the Price Is Right! -This is Johnny Olson speaking for the Price Is Right....a Mark Goodman, Bill Toddman television production- An electromagnet is the correct answer. The guy in engineering feels that an electromagnet should be strong enough to grab the weight in each car, and slow it down. At this point, I am willing to try anything. If it doesn't work on my test track, then I am going to invite him over, and see what he can figure out. This thing is going to work IF it kills me. LOL! Wed is purchasing day! I will have enough saved up for buying at least $800 dollars worth of stuff. And NO, I am NOT going to blow it on just ONE engine. Nice try. Hahaha! I will keep you guys updated on all things ROCK and MWDLRR. Have a good morning.