Saw this in the clearance aisle at Tesco blackpool, these were originally £4.99, so less than 1/2 price now. even cheaper than TOMY themselves who have them for half price @ £2.49.
Don't know much about them myself but here's some description i found: -
(think you can buy a track too, so maybe more interesting and educational (they have to make them) than Hotwheels and they have a pull back motors
Battle Deck is the ultimate collecting, customising and battle racing system! Use the 3 stage deck to build your battling car, snap it out and your ready to race!
Each car possesses its own individual racing and battling attributes, and is comprised of a chassis, engine, and bumper deck. All of which can be mix and matched with other Battle Deck cars - snap the component decks together and you are ready to go to battle! The more cars you collect, the more options you have for racing and battling against your friends - customise your cars using different components and create the ultimate battler! Features special 'lane changing' action to swerve past and avoid your opponents.
Only one supplied.