Next time you feel the need for speed & the desire to unleash your inner boy/girl racer you'll find there's no quicker way to get your fix of ' Formula Fun' than with this great Hand Generator Race In A Case Set. Unlike having to clunk together lengths of track, as with Scalextric & other slot car racing systems, you merely need to unzip the bag, place the cars on the track, plug in the generators, & you're good to go!