how about these for pull?

[Chevycummins]

http://www.youtube.com/watch?v=Oca5j8_CEq4

or this who wants to call this? lol an rc car pulling a small steel car

http://www.youtube.com/watch?v=uk1Y1SgPGVs

 

[ElliotB_16]

now we just need one that will blow smoke lol

 

[03dodgeoffroad]

look up conley v8 it is the coolest thing ever expensive but very cool