Amazon has the 94-Piece Lego Ninjago Kai's Ninja 20 in 1 Race Car EVO Set (71780) for $8.99 - $2 off coupon (check "Apply $2 coupon") = $6.99 with free shipping on $35+ or with Prime. Has an opening cockpit with space for a minifigure, mega tires and a golden wing spoiler on the back.