most 2.4 have a built in failsafe but if your not getting it till xmas i would still buy a failsafe to run with the am radio system till then and as for a 2.4ghz radio my lil bro has this one for a few month and he seems really happy with it ive drove his car a few times and it wortks really well
http://www.modelsport.co.uk/?CallFun...n&ItemID=36244