Yes that speed record is actual speed. This hobby is very expensive first off! Today many rc cars are very complex and yet simple pieces of fun! Some RC cars have 3 speed trannies and very small high powered engines.
I would not attempt to use the Mini Innovation First contoller (EDUBot). First off this would be very heavy! Second their is no need to use one! Third if your car crashed at 50 MPH is would no longer exist.
My RC truck (tmaxx) costs $400 bucks for the truck. Not to mention the batteries and chargers another $40. You also need other support equipment.
The fuel alone cost $23 a gallon. Imagine paying that much for it at the pump! yikes!
If you need anything just let me know.
Here is my truck. It goes 40 MPH out of the box.
www.traxxas.com