Acccurail kits are a great economical way to expand one's freight car fleet on a budget. Granted they aren't super detailed, however they lend themselves to be if one chooses. They are great runners as is or can be upgraded easily with metal wheel sets and couplers. I run these as a unit train, (currently at 32) where they run and look exceptionally well. Assembly of the kit is straight forward, simple and can provide a relaxing change of pace in our hectic lives. It also provides a sense of accomplishment that one can't get with Ready To Run cars.