[RCMadShane]

This is Spektrums offering but it mounts up a bit

Reader / Handheld unit
http://www.spektrumrc.com/products/d...prodid=spm1320

Track Side
http://www.spektrumrc.com/Products/D...ProdID=SPM1330

Car
http://www.spektrumrc.com/Products/D...ProdID=SPM1453

Looks Quite good and may do multiple cars